到底哪里错了！！！80分

#include<stdio.h>
int n, x;
int a[1000050];
int main()
{
	int ans = 0;
	scanf("%d%d", &n, &x);
	for (int i = 1; i <= n; i++)
	{
		scanf("%d", &a[i]);
	}
	if (a[1] > x)
	{
		ans += a[1] - x;
		a[1] = x;
	}
	for (int i = 1; i < n; i++)
	{
		if (a[i] + a[i + 1] > x)
		{
			ans += a[i] + a[i + 1] - x;
			a[i + 1] = x - a[i];
		}
	}
	printf("%d", ans);
	return 0;
}