#include <iostream>
using namespace std;
int main() {
//	freopen("stock.in","r",stdin);
//	freopen("stock.out","w",stdout);
    int n;
    cin>>n;
    int p[1000000];
    for(int i=0;i<n;i++){
        cin>>p[i];
    }
    int a= 0;
    int b=p[0];

    for (int i = 1; i < n; i++) {
    	
        b=min(b,p[i-1]);
        int c=p[i]-b;
        a=max(a,c);
    }
    cout<<a<<endl;
	    return 0;
}

运行不了 一运行就|

                \/如下

Process exited after 1.231 seconds with return value 3221225725 请按任意键继续. . .