Submission #475388

#	Time	Username	Problem	Language	Result	Execution time	Memory
475388		Ahmed_Solyman	Rasvjeta (COCI17_rasvjeta)	C++14	50 / 50	2 ms	332 KiB

rasjveta

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main()
{
    ll n,m,k;cin>>n>>m>>k;
    map<ll,bool>vis;
    while(m--){
        ll x;cin>>x;
        for(ll i=x-k;i<=x+k;i++)vis[i]=1;
    }
    ll ans=0;
    for(ll i=1;i<=n;i++){
        if(!vis[i]){
            for(ll j=i+k;j>=i;j--)vis[j]=1;
            for(ll j=i+k;j<=i+k*2;j++)vis[j]=1;
            ans++;
        }
    }
    cout<<ans<<endl;
    return 0;
}

• Subtask 1: 50 / 50