Submission #985622

#	Time	Username	Problem	Language	Result	Execution time	Memory
985622		crafticat	Street Lamps (APIO19_street_lamps)	C++17	0 / 100	5032 ms	524288 KiB

street_lamps

#include <bits/stdc++.h>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);

    int n, q; cin >> n>> q;
    string s; cin >> s;

    vector<string> time(q + 1);
    time[0] = s;

    for (int i = 0; i < q; ++i) {
        string t; cin >> t;
        string newTime = time[i];
        if (t == "toggle") {
            int a; cin >> a;
            a--;
            newTime[a] = newTime[a] == '1' ? '0' : '1';
        } else {
            int a, b; cin >> a >> b;
            a--;
            b--;
            int ans = 0;
            for (int j = 0; j <= i; ++j) {
                bool imp = false;
                for (int k = a; k <= b; ++k) {
                    if (time[j][k] == '0') imp = true;
                }
                if (!imp) ans += 1;
            }
            cout << ans << "\n";
        }
        time[i + 1] = newTime;
    }

    return 0;
}

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