Power Of Thor - Episode 1 - Puzzle discussion

5DN1L · May 27, 2023, 7:33am

Two issues:

You determine dirX and dirY AFTER trying to modify tx and ty. That is similar to determining where to move AFTER you have moved. The order is wrong.
You have used – and ++ after the variables. That will make assignment go first (e.g. ty = ty) before incrementing or reducing the variables. That means tx and ty gets unchanged. You may take a look at this article for reference:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Increment

You would find using console.error useful in helping you to debug, e.g. adding this line after let dirX='', dirY='';:
console.error(tx + ' ' + ty);
It prints out the values of the variables so that you know where they are different from your expected values.

By the way, please format your code properly on this forum by using the </> button in the formatting toolbar.

Hope this helps.

florine89 · May 28, 2023, 5:37pm

Hi what’s wrong with my code ?

while (true) {
const remainingTurns = parseInt(readline()); // The level of Thor’s remaining energy, representing the number of moves he can still make.
const routeT = ‘’;

if ( LX < TX && LY > TY) {
   routeT = 'SW';
} else if ( LX > TX && LY < TY ) {
    routeT = 'NE';
} else if  (LY < TY && LX < TX) {
    routeT = 'NO';
} else if ( LY < TY && LX > TX ) {
    routeT = 'SE';
} else if ( LX == TX && LY > TY ) {
    routeT = 'S';
}else if ( LX == TX && LY > TY ) {
    routeT = 'N';
} else if ( LY == TY && LX > TX ) {
    routeT = 'W';
} else if ( LY == TY && LX > TX ) {
    routeT = 'O';
}

nicola · May 28, 2023, 6:49pm

You don’t update Thor’s coordinates.

florine89 · May 28, 2023, 7:06pm

I updates like this, but it still wrong

const remainingTurns = parseInt(readline()); // The level of Thor’s remaining energy, representing the number of moves he can still make.
let routeT = ‘’;

let positionTX = TX;
let positionTY = TY;

if ( LX < TX && LY > TY) {
   routeT = 'SW';
   positionTX--;
   positionTY++;
} else if ( LX > TX && LY < TY ) {
    routeT = 'NE';
    positionTX++;
    positionTY--;
} else if  (LY < TY && LX < TX) {
    routeT = 'NW';
    positionTX--;
    positionTY--;
} else if ( LY > TY && LX > TX ) {
    routeT = 'SE';
    positionTX++;
    positionTY++;
} else if ( LY > TY ) {
    routeT = 'S';
    positionTY++;
}else if (  LY < TY ) {
    routeT = 'N';
    positionTY--;
} else if (  LX > TX ) {
    routeT = 'E';
    positionTX++;
} else if (  LX < TX ) {
    routeT = 'W';
    positionTX--;
}

florine89 · June 8, 2023, 9:01am

Hello evrybody ! I dont understand my code I got this for easy angle : Informations :

Failure: Thor wandered off the path and died (invalid position). Thor position = (16,18). Light position = (31,16). Energy = 30

My code : } else if ( LY > TY && LX > TX ) {
routeT = ‘SE’;
positionTX++;
positionTY++;

If someone can help me…

dwarfie · June 8, 2023, 10:39am

31 > 16 but 16 < 18 …
your code is not for this case

florine89 · June 8, 2023, 11:36am

that’s my all code :

while (true) {
    const remainingTurns = parseInt(readline()); // The level of Thor's remaining energy, representing the number of moves he can still make.
    let routeT = '';

    let positionTX = TX;
    let positionTY = TY;

    if ( LX < TX && LY > TY) {
       routeT = 'SW';
       positionTX--;
       positionTY++;
    } else if ( LX > TX && LY < TY ) {
        routeT = 'NE';
        positionTX++;
        positionTY--;
    } else if  (LY < TY && LX < TX) {
        routeT = 'NW';
        positionTX--;
        positionTY--;
    } else if ( LY > TY && LX > TX ) {
        routeT = 'SE';
        positionTX++;
        positionTY++;
    } else if ( LY > TY ) {
        routeT = 'S';
        positionTY++;
    }else if (  LY < TY ) {
        routeT = 'N';
        positionTY--;
    } else if (  LX > TX ) {
        routeT = 'E';
        positionTX++;
    } else if (  LX < TX ) {
        routeT = 'W';
        positionTX--;
    }
    

    // Write an action using console.log()
    // To debug: console.error('Debug messages...');


    // A single line providing the move to be made: N NE E SE S SW W or NW
    console.log(routeT);
}

I don’t understand what’s wrong

cedricdd · June 8, 2023, 2:02pm

Hi,

You are never updating the position of Thor, since all your checks are using TX & TY and since they are never updated it’s like Thor is always at the starting position.

florine89 · June 8, 2023, 6:06pm

How could you do this ? I’m lost

cedricdd · June 8, 2023, 7:14pm

Just make sure TX & TY are defined as “let” and not “const” and simply replace all the positionTX by TX and positionTY by TY, you should also drop the lines creating positionTX & positionTY as you don’t need these variables.

MayaBrh · June 12, 2023, 1:33am

idk what happend with my code it tells me that : Timeout your program did not provide an input in due time. Earth was destroyed!
can you pls explain

5DN1L · June 12, 2023, 7:18am

I’ve sent you a PM. Please send your code to me there and I’ll take a look.

Neil_Smith · June 23, 2023, 11:16am

The 3rd and 4th tests cannot be done
Test 1 starts Thor 26 places away and gives you 26 steps to succeed
Test 2 starts Thor 13 places away and gives you 13 steps to succeed
Test 3 starts Thor 31 places away but only gives you 14 steps
Test 4 starts Thor 36 places away but only gives you 18 steps
Or have I missed something?

Uljahn · June 23, 2023, 11:44am

Test 3 “Easy angle” starts with 44 remaining turns. It’s possible to complete it in 31 turn using “diagonal” movement (“SE”, “NE”, “SW”, “NW”).

Test 4 “Optimal angle” starts with 36 remaining turns and none of them are spare, i.e. it can’t be solved in under 36 turns.

Neil_Smith · June 23, 2023, 12:59pm

You are correct, just realised that I was using initalTx & initialTy as Thors current positionrather than his starting position.

Thank you for your prompt reply

Norach · June 24, 2023, 6:29pm

i made this code but thor only moves up and down why

import sys
import math

# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
# ---
# Hint: You can use the debug stream to print initialTX and initialTY, if Thor seems not follow your orders.

# light_x: the X position of the light of power
# light_y: the Y position of the light of power
# initial_tx: Thor's starting X position
# initial_ty: Thor's starting Y position
light_x, light_y, initial_tx, initial_ty = [int(i) for i in input().split()]

# game loop
while True:
    remaining_turns = int(input())  # The remaining amount of turns Thor can move. Do not remove this line.

    dif_y = light_y - initial_ty    #Y Anteil des Vektors berechnen
    dif_x = light_x - initial_tx    # same für X
    #straight = math.sqrt(dif_y*dif_y+dif_x*dif_x) # berechnen der länge des Vektors
    #schräge bewegungen
    if dif_y < 0 & dif_x < 0:   
        print ("NW")

    if dif_y > 0 & dif_x < 0:
        print ("SW")

    if dif_y > 0 & dif_x > 0:
        print ("SE")

    if dif_y < 0 & dif_x > 0:
        print ("NE")

    #gerade Bewegungen
    if dif_y == 0 & dif_x > 0:
        print ("E")

    if dif_y == 0 & dif_x < 0:
        print ("W")

    if dif_y < 0 & dif_x == 0:
        print ("N")

    if dif_y > 0 & dif_x == 0:
        print ("S")

balbuzard · July 12, 2023, 6:58am

I don’t know why when i use JS all is done (100%) but in Dart (with the same code) only 50%

MrKrestikMaken · July 28, 2023, 5:35am

People, help me find an error writing in C ++.
I ran all the tests successfully, but as a result I still get an error at Easy angle … here is my code … I already broke all my eyes while trying to find an error

#include
#include
#include
#include

using namespace std;

/**

Auto-generated code below aims at helping you parse
the standard input according to the problem statement.

Hint: You can use the debug stream to print initialTX and initialTY, if Thor seems not follow your orders.
**/
string direction_x, direction_y;
int tx, ty, distantion_x, distantion_y;
int main()
{
int light_x=32; // the X position of the light of power
int light_y=17; // the Y position of the light of power
int initial_tx=0; // Thor’s starting X position
int initial_ty=0; // Thor’s starting Y position
cin >> light_x >> light_y >> initial_tx >> initial_ty; cin.ignore();

tx=initial_tx;
ty=initial_ty;

// game loop
while (1) {
int remaining_turns; // The remaining amount of turns Thor can move. Do not remove this line.
cin >> remaining_turns; cin.ignore();

 // Write an action using cout. DON'T FORGET THE "<< endl"
 // To debug: cerr << "Debug messages..." << endl;
 distantion_x=light_x-tx;
 distantion_y=light_y-ty;

 if(tx>=0)
 {
 if (distantion_x<0){
 direction_x="W";
 tx--;
 }
 }
 else
 direction_x="";

 if(tx<=39)
 {
 if (distantion_x>0){
 direction_x="E"; 
 tx++;
 }
 }
 else
 direction_x="";
 
 if(ty>=0)
 {
 if (distantion_y<0){
 direction_y="N"; 
 ty--;
 }
 }
 else
 direction_y="";
 
 if(ty<17)
 {
 if (distantion_y>0){
 direction_y="S"; 
 ty++;
 }   
 }
 else
 direction_y="";

  

 cerr<<endl<<"distantion x: "<<distantion_x<<" distantion y: "<<distantion_y;   
 cerr<<endl<<"tx->"<<tx<<" "<<direction_x<<" ,ty->"<<ty<<" "<<direction_y;
 // A single line providing the move to be made: N NE E SE S SW W or NW
 cout <<direction_y<< direction_x<< endl;

}
}

5DN1L · July 28, 2023, 9:03am

Please make use of the </> button on the formatting toolbar to format your code properly, if you don’t want others to break their eyes too I tried to read your code but there was not proper indentation and also some bits of it were broken, so I gave up.

You may watch the replay to have an idea of where things may go wrong. Go to MY REPORT, then click DETAILS (see the screenshot below):

Zeltan · August 1, 2023, 9:32am

I think the problem is, that you set the distantion_x<0 and distantion_y<0. The distantion can’t become smaller than 0.