Submission #705824

#	Time	Username	Problem	Language	Result	Execution time	Memory
705824		delrey	Baloni (COCI15_baloni)	C++14	100 / 100	706 ms	96816 KiB

baloni

#include <bits/stdc++.h>

using namespace std;

int n, h[1000000];
bool dp[1000000];
set <int> p[1000010];

int main()
{
    cin>>n;
    for(int i = 0; i < n; i++)
    {
        cin>>h[i];
        p[h[i]].insert(i);
    }
    for(int i = n - 1; i >= 0; i--)
    {
        auto it = p[h[i] - 1].upper_bound(i);
        dp[i] = true;
        if(it != p[h[i] - 1].end())
        {
            dp[*it] = false;
            p[h[i] - 1].erase(it);
        }
    }
    int res = 0;
    for(int i = 0; i < n; i++)
        res += dp[i];
    cout<<res<<endl;
    return 0;
}

• Subtask 1: 100 / 100