Submission #1299700

#	Time	Username	Problem	Language	Result	Execution time	Memory
1299700		anarch_y	가로등 (APIO19_street_lamps)	C++20	20 / 100	5092 ms	589824 KiB

street_lamps

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()
#define pb push_back

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, q; cin >> n >> q;
    string s; cin >> s;
    s = '#' + s;
    vector<string> v(q+1);
    v[0] = s;
    for(int c=1; c<=q; c++){
        string tp; cin >> tp;
        if(tp == "toggle"){
            int i; cin >> i;
            if(s[i] == '0') s[i] = '1';
            else s[i] = '0';
            v[c] = s;
        }
        else{
            int a, b; cin >> a >> b;
            b--;
            int ans = 0;
            for(int c1=0; c1<c; c1++){
                auto t = v[c1];
                int ok = 1;
                for(int i=a; i<=b; i++){
                    if(t[i] == '0') ok = 0;
                }
                if(ok) ans++;
            }
            cout << ans << "\n";
            v[c] = s;
        }
    }
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20