pku2128.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>
#define size 51000
#define TheMax 1000000001
int N;
int a[size];
void Solve()
{
	int i, min, id;
	min = TheMax;
	id = -1;
	a[1] = 0;
	for (i = 2; i <= N; i++)
	{
		scanf("%d", &a[i]);
	}
	for (i = 3; i < N; i++)
	{
		if (a[i] - a[i - 1] < min)
		{
			min = a[i] - a[i - 1];
			id = i;
		}
	}
	if (id == -1)
	{
		printf("0\n");
	}
	else
	{
		printf("%d\n%d %d %d %d\n", min + a[N], id, 1, N, id - 1);
	}
}

int main()
{
	while (scanf("%d", &N) != -1)
	{
		Solve();
	}
	return 0;
}