Submission #1135109

#	Time	Username	Problem	Language	Result	Execution time	Memory
1135109		lopkus	Street Lamps (APIO19_street_lamps)	C++20	0 / 100	5095 ms	2984 KiB

street_lamps

#include<bits/stdc++.h>

#define int long long

using namespace std;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    vector<int> a(n + 1);
    for(int i = 1; i <= n; i++) {
        char x;
        cin >> x;
        if(x == '1') {
            a[i] = 1;
        }
        else {
            a[i] = 0;
        }
    }
    vector<int> op(q + 1, - 1);
    for(int i = 1; i <= q; i++) {
        string type;
        cin >> type;
        if(type == "query") {
            int l, r;
            cin >> l >> r;
            r -= 1;
            int ans = 0;
            vector<int> b(n + 1);
            for(int j = 1; j <= n; j++) {
                b[j] = a[j];
            }
            for(int j = 1; j <= i; j++) {
                if(op[j] != - 1) {
                    b[op[j]] ^= 1;
                    continue;
                }
                int ok = 0;
                for(int x = l; x <= r; x++) {
                    ok += b[x];
                }
                if(ok == r - l + 1) {
                    ans += 1;
                }
            }
            cout << ans << "\n";
        }
        else {
            int index;
            cin >> index;
            op[i] = index;
        }
    }
}

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