J题44.44wa求调
#include<bits/stdc++.h> using namespace std; int n,sum,res; char c[1001000]; int main(){ cin >> n; for(int i = 1;i <= n;i ++){ cin >> c[i]; } for(int i = 1;i <= n;i ++){ if(c[i] == '0'){ res += 10; sum += res; }else if(c[i] == '1'){ res = max(res - 5,0); sum += res; }else if(c[i] == '2'){ sum += max(res - 10,0); } //cout << res << " "; } cout << sum; return 0; }