The Descent - Solution

thedescent.js

// game loop
while (true) {
    var largestMontain = 0;
    var indexToShot = 0;
  
    for (var i = 0; i < 8; i++) {
        var mountainH = parseInt(readline()); // represents the height of one mountain.
        if(largestMontain < mountainH) {
            largestMontain = mountainH;
            indexToShot = i;
        }
    }

    // Write an action using print()
    // To debug: printErr('Debug messages...');

    print(indexToShot); // The index of the mountain to fire on.
}