제출 #1174303

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1174303		heeheeheehaaw	Homework (CEOI22_homework)	C++20	100 / 100	66 ms	38792 KiB

Main

#include <bits/stdc++.h>

using namespace std;

int n, x;
string s;

pair<int, int> solve()
{
    if(s[x++] == '?') return {1, n};

    char c = s[x];
    x += 3;
    pair<int, int> a = solve();
    x++;
    pair<int, int> b = solve();
    x++;

    if(c == 'i')
    {
        return {min(a.first, b.first), a.second + b.second - n - 1};
    }
    else
    {
        return {a.first + b.first, max(a.second, b.second)};
    }

}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    cin>>s;
    for(int i = 0; i < s.size(); i++)
        if(s[i] == '?')
            n++;
    pair<int, int> rez = solve();
    cout<<rez.second - rez.first + 1;
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 13 / 13
• Subtask 3: 13 / 13
• Subtask 4: 30 / 30
• Subtask 5: 34 / 34