Submission #170560

#	Time	Username	Problem	Language	Result	Execution time	Memory
170560		mdn2002	Unija (COCI17_unija)	C++14	80 / 100	1080 ms	44532 KiB

unija

#include<bits/stdc++.h>
using namespace std;
const long long mod=998244353;
multiset<int>ms;
int n,k;
map<int,int>a;
int v[1000006];
vector<int>b;
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;
            b.push_back(y+1);
        }
        if(v[a[y+1]]==0)
        {
            v[a[y+1]]=x;
            ms.insert(x);
            continue;
        }
        if(v[a[y+1]]<x)
        {
            ms.erase(ms.lower_bound(v[a[y+1]]));
            ms.insert(x);
            v[a[y+1]]=x;
        }
    }
    sort(b.begin(),b.end());
    long long ans=0;
    for(int i=0;i<b.size();i++)
    {
        int z=b[i],z1;
        if(i>0)z1=b[i-1];
        else z1=1;
        ans+=*--ms.end()*(z-z1);
        if(v[a[z]]!=0)
        {
            int x=v[a[z]];
            ms.erase(ms.lower_bound(x));
        }
        if(ms.size()==0)break;

    }
    cout<<ans*4;
}

Compilation message (stderr)

unija.cpp: In function 'int main()':
unija.cpp:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<b.size();i++)
                 ~^~~~~~~~~

• 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