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Submission #397509

# Submission time Handle Problem Language Result Execution time Memory
397509 2021-05-02T10:14:16 Z mewnian Baloni (COCI15_baloni) C++14
100 / 100
 75 ms 9668 KB 
#include <bits/stdc++.h>
#define sze(x) (ll)x.size()
#define idx(x, a) get<x>(a)
#define pb push_back
#define fi first
#define se second

using namespace std;

typedef long long ll;

const ll MAXN = 1e6 + 3;
const ll INF = 1e18 + 7;

ll a[MAXN], here[MAXN], n, res = 0;

int main()
{
    ios_base::sync_with_stdio(0); cout.tie(0);
    #ifdef OFFLINE
    freopen("input.inp", "r", stdin);
    #endif
    cin >> n;
    for (ll i = 0; i < n; ++i) cin >> a[i];
    for (ll i = n - 1; i >= 0; --i)
    {
        if (here[a[i] - 1]) here[a[i] - 1]--;
        else ++res;
        here[a[i]]++;
    }
    cout << res;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 74 ms 8944 KB Output is correct
6 Correct 75 ms 9668 KB Output is correct
7 Correct 64 ms 8432 KB Output is correct
8 Correct 60 ms 8360 KB Output is correct
9 Correct 73 ms 8652 KB Output is correct
10 Correct 68 ms 8900 KB Output is correct