Submission #798727

#	Time	Username	Problem	Language	Result	Execution time	Memory
798727		tlnk07	Magneti (COCI21_magneti)	C++17	0 / 110	1 ms	212 KiB

Main

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

long long n, m, x, s = 1, mod = 1e9 + 7;

int main()
{
	cin >> n >> m;
	for(int i = 1; i <= n; ++i)	cin >> x;
	m -= 1;
	for(int i = 2; i <= n; ++i)
	{
		s *= i;
		m -= x;
		s %= mod;
	}
	if(m < 0)
	{
		cout << 0;
		return 0;
	}
	int t = n + 1;
	for(int i = 1; i <= m; ++i, ++t)
	{
		s = (s * t / i) % mod;
	}
	cout << s;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 50