oj.uz

Submission #367103

# Submission time Handle Problem Language Result Execution time Memory
367103 2021-02-16T09:58:12 Z ritul_kr_singh Po (COCI21_po) C++17
70 / 70
 13 ms 1516 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << " " <<
#define nl << "\n"

signed main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int n; cin >> n;
    int a[n], ans = 0;
    for(int& i : a) cin >> i;

    stack<int> s;
    s.push(0);

    for(int i=0; i<n; ++i){
        while(!s.empty() and s.top() > a[i]){
            s.pop();
            ++ans;
        }
        if(s.empty() or s.top() < a[i]) s.push(a[i]);
    }
    while(!s.empty()){
        s.pop();
        ++ans;
    }
    cout << ans-1 nl;
}

Subtask #1
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 4 ms 748 KB Output is correct
5 Correct 6 ms 876 KB Output is correct
6 Correct 12 ms 1516 KB Output is correct
7 Correct 13 ms 1260 KB Output is correct