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Submission #541334

# Submission time Handle Problem Language Result Execution time Memory
541334 2022-03-23T06:46:29 Z AlperenT Po (COCI21_po) C++17
70 / 70
 11 ms 3028 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 5;

long long n, arr[N], nxt[N], upd[N], cur, ans;

stack<int> stck;

int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);

    cin >> n;

    for(int i = 1; i <= n; i++) cin >> arr[i];

    arr[n + 1] = -1;
    stck.push(n + 1);

    for(int i = n; i >= 1; i--){
        while(arr[stck.top()] >= arr[i]) stck.pop();

        nxt[i] = stck.top();

        stck.push(i);
    }

    for(int i = 1; i <= n; i++){
        cur += upd[i];

        if(cur == arr[i]) continue;
        else{
            upd[nxt[i]] -= arr[i] - cur;

            ans++;

            cur += arr[i] - cur;
        }
    }

    cout << ans;
}

Subtask #1
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 5 ms 1620 KB Output is correct
5 Correct 7 ms 2132 KB Output is correct
6 Correct 11 ms 2484 KB Output is correct
7 Correct 11 ms 3028 KB Output is correct