Submission #170539

#	Time	Username	Problem	Language	Result	Execution time	Memory
170539		mdn2002	Unija (COCI17_unija)	C++14	80 / 100	680 ms	65540 KiB

unija

#include<bits/stdc++.h>
using namespace std;
const long long mod=998244353;
multiset<int>ms;
int n,k,a[10000047];
vector<int>v[1000506];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("lemonade.in","r",stdin);
    //freopen("lemonade.out","w",stdout);
    cin>>n;
    for(int i=0;i<n;i++)
    {
        int x,y;
        cin>>x>>y;
        x/=2;
        y/=2;
        if(a[y+1]==0)a[y+1]=++k;
        ms.insert(x);
        v[a[y+1]].push_back(x);
    }
    long long ans=0;
    for(int i=1;i<=10000004;i++)
    {
        for(int j=0;j<v[a[i]].size();j++)
        {
            ms.erase(ms.lower_bound(v[a[i]][j]));
        }
        if(ms.size()==0)break;
        ans+=*--ms.end();
    }
    cout<<ans*4;
}

Compilation message (stderr)

unija.cpp: In function 'int main()':
unija.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<v[a[i]].size();j++)
                     ~^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 0 / 10