Submission #161759

#	Time	Username	Problem	Language	Result	Execution time	Memory
161759		Minnakhmetov	Street Lamps (APIO19_street_lamps)	C++14	20 / 100	5077 ms	12256 KiB

street_lamps

#include <bits/stdc++.h>
    
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
 
using namespace std;

struct Q {
    int type, x, y;
};

string s;
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);

    int n, q;

    cin >> n >> q >> s;

    vector<Q> qr;

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

        if (t[0] == 'q') {
            int x, y;
            cin >> x >> y;
            x--;
            y -= 2;
            qr.push_back({0, x, y});
        }
        else {
            int x;
            cin >> x;
            x--;
            qr.push_back({1, x});
        }
    }

    for (int i = 0; i < qr.size(); i++) {
        if (qr[i].type == 0) {
            string tmp = s;
            int ans = 0;
            for (int j = 0; j <= i; j++) {
                ans++;
                for (int k = qr[i].x; k <= qr[i].y; k++) {
                    if (tmp[k] == '0') {
                        ans--;
                        break;
                    }
                }
                if (qr[j].type) {
                    tmp[qr[j].x] = '0' + (tmp[qr[j].x] == '0');
                }
            }
            cout << ans << "\n";
        }
    }



    return 0;
}

Compilation message (stderr)

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < qr.size(); i++) {
                     ~~^~~~~~~~~~~

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