Untitled

#include <stdio.h>
int stone[16];
int jumped[17] = {0};//已走過的石頭
int color[17] = {0};
int max = -1, energy = 0, step = -1, anstep = -1;
int n, s, t;

int abs(int a){
    if(a < 0) return -a;
    else return a;
}

void jump(int expos, int pos, int end){//上一個所在位置、目前位置、結束點
    if(jumped[pos] == 1 || pos == 0 || pos > n){
        return;
    }//遇到已走過的石頭或超出石頭範圍則結束
    else{
        jumped[pos] = 1;
        step++;
        energy += abs(expos-pos)*abs(stone[pos]-stone[expos]);
    }
    if(pos == end){//走到結束的石頭時
        if(energy > max){
            max = energy;
            anstep = step;
        }
        energy = 0;
        step = -1;
        jumped[pos] = 0;
        return;
    }
    jump(pos, pos-1, end);
    jump(pos, pos+1, end);
    for(int i = 1; i <= n; i++){
        if(color[pos] == color[i]) jump(pos, i, end);
    }//走到同顏色的石頭
}
int main(){

    scanf("%d%d%d", &n, &s, &t);
    for(int i = 1; i <= n; i++){
        scanf("%d", &stone[i]);
    }
    for(int i = 1; i <= n; i++){
        scanf("%d", &color[i]);
    }
    jump(s, s, t);
    printf("%d %d\n", max, anstep);
}