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답안 #544697

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
544697 2022-04-02T14:41:59 Z AbdelmagedNour Baloni (COCI15_baloni) C++17
100 / 100
 75 ms 7304 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
int a[1000005],freq[1000005];
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    for(int i=0;i<n;i++)cin>>a[i];
    int res=0;
    for(int i=n-1;i>=0;i--){
        freq[a[i]]++;
        if(freq[a[i]-1])freq[a[i]-1]--;
        else res++;
    }
    cout<<res;
    return 0;
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 56 ms 6940 KB Output is correct
6 Correct 56 ms 7304 KB Output is correct
7 Correct 52 ms 5964 KB Output is correct
8 Correct 52 ms 5848 KB Output is correct
9 Correct 61 ms 6496 KB Output is correct
10 Correct 75 ms 6460 KB Output is correct