Submission #1364289

#	Time	Username	Problem	Language	Result	Execution time	Memory
1364289		kawhiet	Street Lamps (APIO19_street_lamps)	C++20	20 / 100	5092 ms	589824 KiB

street_lamps

#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 47
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q;
    string s;
    cin >> n >> q >> s;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        a[i] = s[i] - '0';
    }
    vector<vector<int>> b = {a};
    while (q--) {
        string t;
        cin >> t;
        if (t == "toggle") {
            int i;
            cin >> i;
            a[--i] ^= 1;
        } else {
            int l, r;
            cin >> l >> r;
            l--; r--;
            int res = 0;
            for (int i = 0; i < b.size(); i++) {
                vector<int> x = b[i];
                bool ok = true;
                for (int i = l; i < r; i++) {
                    if (x[i] == 0) {
                        ok = false;
                    }
                }
                if (ok) {
                    res++;
                }
            }
            cout << res << '\n';
        }
        b.push_back(a);
    }
    return 0;
}

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