大佬能帮看下第一题吗?不知道卡哪了只过了60...感谢 int main() { int m, n; cin >> m >> n; vector<vector<int>> a(m, vector<int>(n)); for(int i = 0;i < m;i++) for(int j = 0;j < n;j++) cin >> a[i][j]; double ans = 0; for(int j = 0;j < n;j++){ priority_queue<int, vector<int>, greater<int>> q; for(int i = 0;i < m;i++) q.push(a[i][j]); double sum = 0; while(!q.empty()){ sum += q.top(); q.pop(); ans += sum/m; } } cout << ans << endl; return 0; }