Submission #1044930

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044930		vjudge1	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	5089 ms	524288 KiB

street_lamps

#include <bits/stdc++.h>
#define fast cin.tie(0)->sync_with_stdio(0);
#define int long long
#define inf ((int)1e18)
using namespace std;

int32_t main(){
	fast
	int n, q;
	cin >> n >> q;
	string s;
	cin >> s;
	vector <string> states;
	states.push_back(s);
	while(q--) {
		string t;
		cin >> t;
		if(t == "query") {
			int a, b, ans = 0;
			cin >> a >> b;
			for(auto it:states) {
				bool yes = 1;
				for(int i = a - 1; i < b - 1; i++) {
					if(it[i] != '1') {
						yes = 0;
						break;
					}
				}
				ans += yes;
			}
			states.push_back(states.back());
			cout << ans << "\n";
		}
		else {
			int ind;
			cin >> ind;
			string p = states.back();
			p[ind - 1] = (p[ind - 1] - '0' + 1) % 2 + '0';
			states.push_back(p);
		}
	}
}

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