Submission #12,755

2024-12-29 21:46:06

cpp17

Accepted 50/50

18ms

508 KiB

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

#define int long long

signed main() {
	int n, k;
	cin >> n >> k;
	int sum = 0;
	for(int i = 0; i < n; i++) {
		int x;
		cin >> x;
		sum += x;
	}
	if (sum < k) {
		cout << 0 << endl;
		return 0;
	}
	cout << ((sum-k+2)*(sum-k+1))/2 << endl;

}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	320 KiB
		2	Accepted	0/0	1ms	320 KiB
		3	Accepted	0/0	17ms	320 KiB
		4	Accepted	2/2	1ms	320 KiB
		5	Accepted	2/2	1ms	320 KiB
		6	Accepted	2/2	1ms	320 KiB
		7	Accepted	3/3	1ms	320 KiB
		8	Accepted	3/3	1ms	320 KiB
		9	Accepted	3/3	1ms	320 KiB
		10	Accepted	2/2	1ms	320 KiB
		11	Accepted	3/3	1ms	320 KiB
		12	Accepted	2/2	1ms	320 KiB
		13	Accepted	3/3	1ms	508 KiB
		14	Accepted	2/2	17ms	408 KiB
		15	Accepted	2/2	17ms	404 KiB
		16	Accepted	3/3	17ms	396 KiB
		17	Accepted	3/3	17ms	408 KiB
		18	Accepted	3/3	18ms	320 KiB
		19	Accepted	3/3	17ms	500 KiB
		20	Accepted	3/3	17ms	400 KiB
		21	Accepted	3/3	18ms	320 KiB
		22	Accepted	3/3	17ms	408 KiB