辛雨的题解来了! 屎山迷宫YYDS

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll cmp[100001];
int main(){
    int t;
    cin >>t;
    int tmp = 0;
    for(int i = 0;i<t;i++){
        ll a,b,c;
        cin >>a>>b>>c;
        cmp[i] = a;
        if(b % 3 >= c&&b != 0&&c != 0){
            cmp[i] = -1;
        }
        else if(b % 3 == 0){
            cmp[i] += b / 3;
            if (c % 3 == 0){
                cmp[i] += c / 3;
            }
            else{
                cmp[i] += c / 3 + 1;
            }
        }
        else if(b % 3 == 1){
            if(c - 2 >= 0){
                cmp[i] += b / 3 + 1;
                c-=2;
                if (c % 3 == 0){
                    cmp[i] += c / 3;
                }
                else{
                    cmp[i] += c / 3 + 1;
                }
            }
            else{
                cmp[i] = -1;
                tmp++;
                break;
            }
        }
        else if(b % 3 == 2){
            if(c - 1 >= 0){
                cmp[i] += b / 3 + 1;
                c--;
                if (c % 3 == 0){
                    cmp[i] += c / 3;
                }
                else{
                    cmp[i] += c / 3 + 1;
                }
            }
            else{
                cmp[i] = -1;
                tmp++;
                break;
            }
        }
        tmp++;
    }
    for (int i = 0;i<tmp;i++){
        cout <<cmp[i]<<endl;
    }
}