| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1342238 | nguyenkhangninh99 | Homework (CEOI22_homework) | C++20 | 56 ms | 38716 KiB |
#include <bits/stdc++.h>
using namespace std;
int x = 0, n;
string s;
pair<int, int> Form(){
if(s[x] == '?') return {1, n};
x++;
char o = s[x];
x += 3;
pair<int, int> l = Form();
x += 2;
pair<int, int> r = Form();
x++;
if(o == 'i') return {min(l.first, r.first), l.second + r.second - n - 1};
return {l.first + r.first, max(l.second, r.second)};
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> s;
n = count(s.begin(), s.end(), '?');
auto [l, r] = Form();
cout << r - l + 1;
}
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