제출 #1284214

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1284214		AbdullahIshfaq	Bliskost (COI23_bliskost)	C++20	100 / 100	176 ms	6004 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 998244353
void solve()
{
	ll n, q, sm = 0, p;
	cin >> n >> q;
	string s, t;
	cin >> s >> t;
	char c;
	for (int i = 0; i < n; i++)
	{
		if (i & 1)
		{
			sm = sm - s[i] + t[i];
		}
		else
		{
			sm = sm + s[i] - t[i];
		}
	}
	if (sm % 26 == 0)
	{
		cout << "da" << '\n';
	}
	else
	{
		cout << "ne" << '\n';
	}
	for (int i = 0; i < q; i++)
	{
		cin >> p >> c;
		p--;
		if ((p & 1) == 0)
		{
			sm = sm - s[p] + t[p];
		}
		else
		{
			sm = sm + s[p] - t[p];
		}
		s[p] = c;
		if (p & 1)
		{
			sm = sm - s[p] + t[p];
		}
		else
		{
			sm = sm + s[p] - t[p];
		}
		if (sm % 26 == 0)
		{
			cout << "da" << '\n';
		}
		else
		{
			cout << "ne" << '\n';
		}
	}
}
int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int tests = 1;
	// cin >> tests;
	for (int i = 1; i <= tests; i++)
	{
		// cout << "Case #" << i << ": ";
		solve();
	}
	return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 12 / 12
• Subtask 5: 17 / 17
• Subtask 6: 43 / 43