Submission #716528

#	Time	Username	Problem	Language	Result	Execution time	Memory
716528		1zaid1	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	109 ms	3956 KiB

street_lamps

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

#define int long long
#define endl '\n'

const signed M = 1e4, MOD = 998244353;
bitset<101> bt[M];

signed main() {
    cin.tie(0)->sync_with_stdio(0);

    int n, q;
    cin >> n >> q;

    string s;
    cin >> s;
    for (int i = 0; i < s.size(); i++) bt[i+1][0] = s[i] == '1';

    for (int i = 0; i < q; i++) {
        string s;
        cin >> s;

        if (s == "query") {
            int l, r;
            cin >> l >> r;

            bitset<101> b = bt[l];
            for (int j = l; j < r; j++) b &= bt[j];
            cout << b.count() << endl;
        // cout << b << endl;
        }

        for (int j = 1; j <= n; j++) bt[j][i+1] = bt[j][i];
        if (s == "toggle") {
            int x;
            cin >> x;

            bt[x][i+1] = !bt[x][i+1];
        }
    }

    // for (int i = 1; i <= n; i++){
        // for (int j = 0; j < q; j++) cout << bt[i][j]; cout << endl;
    // }

    return 0;
}
/*
5 7
11011
query 1 2
query 1 2
query 1 6
query 3 4
toggle 3
query 3 4
query 1 6
*/

Compilation message (stderr)

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:18:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0; i < s.size(); i++) bt[i+1][0] = s[i] == '1';
      |                     ~~^~~~~~~~~~

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