#include<iostream>
using namespace std;

int main(){
    int n,y=100001;
    int x=0;
    cin >> n;

    int *array = new int[n];

    for( int i=0; i<n; i++ )
    {
        cin >> array[i];
    }

    for (int i=0; i<n; i++)
    {
            x = (array[i+1] - array[i]);
            if(x < y && x >= 0) { y = x; }
    }

    cout << y;
    system("PAUSE");
    return 0;
}

----------------------------------------------------------------
Why WA#1?

I got 3 for:
5
5 8 13 27 14


So? Does someone know?

WA - Wrong Algorithm