Submission #1130408

#TimeUsernameProblemLanguageResultExecution timeMemory
1130408AndrijaMBaloni (COCI15_baloni)C++20
0 / 100
135 ms196608 KiB
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define endl '\n'

const int maxn=1e6+10;
const int mod=1e9+7;

stack<int>s[maxn];

signed main()
{
    ios::sync_with_stdio(false);
    ///freopen("dulciuri.in","r",stdin);
    ///freopen("dulciuri.out","w",stdout);
    int n;
    cin>>n;
    int a[n];
    int ans=0;
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
        if(s[a[i]+1].size()==0)
        {
            ans++;
            s[a[i]].push(i);
        }
        else
        {
            s[a[i]+1].pop();
            s[a[i]].push(i);
        }
    }
    cout<<ans<<endl;
    return 0;
}
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