문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
int n; cin >> n;
int ans = 0, cur = 1000;
while (n--) {
int p; cin >> p;
cur = min(cur, p);
ans += max(0, p-cur);
}
cout << ans;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}