Submission #569174

#	Time	Username	Problem	Language	Result	Execution time	Memory
569174		aryan12	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	132 ms	13156 KiB

street_lamps

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

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
	int n, q;
	cin >> n >> q;
	vector<array<int, 2> > a(n + 1, {0, -1}); // alr occurred, start pos (start pos = -1 if off)
	string s;
	cin >> s;
	for(int i = 0; i < n; i++) 
	{
		if(s[i] == '1')
		{
			a[i] = {0, 0};
		}
	}
	for(int i = 1; i <= q; i++)
	{
		string command;
		cin >> command;
		if(command == "query")
		{
			int x, y;
			cin >> x >> y;
			x--, y--;
			int ans = a[x][0];
			if(a[x][1] != -1) ans += (i - a[x][1]); 
			cout << ans << "\n";
		}
		else
		{
			int idx;
			cin >> idx;
			idx--;
			if(a[idx][1] == -1)
			{
				a[idx][1] = i;
			}
			else
			{
				a[idx][0] += (i - a[idx][1]);
				a[idx][1] = -1;
			}
		}
	}
}

int32_t main() 
{
	auto begin = std::chrono::high_resolution_clock::now();
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	// cin >> t;
	for(int i = 1; i <= t; i++) 
	{
		//cout << "Case #" << i << ": ";
		Solve();
	}
	auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
	return 0;
}

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