National Day Training Day 3(10.3)

A : mountain
Score : 100
Diff : 0
Comment :
EZ. Without array.
(Code : )

#include 
using namespace std;

int main() {
    freopen("mountain.in", "r", stdin);
    freopen("mountain.out", "w", stdout);
    int _;cin >> _;
    int s, t, cv=0;cin >> s;
    while (cin >> t) {
        cv = max(cv, abs(t-s));
        s=t;
    }
    cout << cv;
    return 0;
}