Submission #1183089

#TimeUsernameProblemLanguageResultExecution timeMemory
1183089mxbBaloni (COCI15_baloni)C++20
0 / 100
1686 ms7800 KiB
#include <bits/stdc++.h>

using namespace std;

int n, nr = 0;
vector<int> v, fr;
int main()
{
    cin >> n;
    v.resize(n);
    fr.resize(1e6 + 1);
    for(int i = 0; i < n; i++) {
        cin >> v[i];
        fr[v[i]]++;
    }
    for(int i = 0; i < n; i++) {
        if(!fr[v[i]]) continue;
        fr[v[i]]--;
        int h = v[i] - 1;
        for(int j = i + 1; j < n; j++)
            if(fr[v[j]] && v[j] == h)
                fr[v[j]]--, h--;
        nr++;
    }
    cout << nr;
}
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