Scrooge McDuck

let size = gets().split(' ').map(Number);
fieldY = size[0];
fieldX = size[1];
let matrix = [];
let coins = 0
let position = [0,0] //coordinates
for (let i = 1 ; i <= fieldY; i++){
    matrix.push(gets().split(' ').map(Number));

}

// тука се намира нулевата позиция
loop:
for(let i = 0 ; i <= fieldX-1; i++){
    for (let j = 0; j <= fieldY-1; j++){
        if(matrix[i][j] === 0 ){
            position[0] = i
            position[1] = j
            break loop;
        }
    }
}
//тази функция определя максималната посока според правилото
// "he chooses a cell (always the largest) from the order left, right, up, down"
let maxLRUD = (dir) =>{
    let max = dir.slice();
    max = max.sort((a,b) => a-b)
    let maximum = max[3]
    if(dir[0] >= maximum){
        return 'left';
    } else if(dir[1] >= maximum){
        return 'right';
    } else if(dir[2] >= maximum){
        return 'up'
    } else if(dir[3] >= maximum){
        return 'down'
    }
}
//тука се определа посоката според монетите и накрая се извиква горната функция
let maxCoinsDirection = (position) =>{
let left = 0;
let right = 0 ;
let up = 0 ;
let down = 0;
    if (position[0]>0){
            up = matrix[position[0]-1][position[1]]
    }
    if (position[0]<fieldY-1){
            down = matrix[position[0]+1][position[1]]
    }
    if (position[1]<fieldX-1){
            right = matrix[position[0]][position[1]+1]
    }
    if (position[1]>0){
            left = matrix[position[0]][position[1]-1]
    }

let dir = [left, right, up, down]

return maxLRUD(dir)

}
// тази функция определя дали е свършила играта
let endCheck = (position) => {
    let endLeft, endDown, endRight, endUp = false
   if( position[1] === 0 ){
    endLeft = true;
   } else if (matrix[position[0]][position[1]-1] === 0){
    endLeft = true;
   }

   if(position[1] === fieldX-1){
    endRight =true
   } else if (matrix[position[0]][position[1]+1] === 0 ){
    endRight = true;
   }
   if(position[0] === 0){
    endUp =true
   } else if (matrix[position[0]-1][position[1]] === 0 ){
    endUp = true;
   }
   if(position[0] === fieldY-1){
    endDown =true
   } else if( matrix[position[0]+1][position[1]] === 0 ){
    endDown = true;
   }
   if(endLeft && endRight && endUp && endDown){
    return true
   } else {
    return false
   }

}
let direction = ''

//тука се събират монетите
while(true){
    if(endCheck(position)){
        break;
    }
    direction = maxCoinsDirection(position)
    if(direction === 'left'){
        matrix[position[0]][position[1]-1] --;
        position[1]--;
    } else if (direction === 'right'){
        matrix[position[0]][position[1]+1] --;
        position[1]++;
    } else if (direction === 'up') {
        matrix[position[0]-1][position[1]] --;
        position[0] --;
    } else if (direction === 'down') {
        matrix[position[0]+1][position[1]] --;
        position[0]++;
    }
    coins++

}


console.log(coins);