Submission #570677

#	Time	Username	Problem	Language	Result	Execution time	Memory
570677		AGE	Simfonija (COCI19_simfonija)	C++14	0 / 110	453 ms	4588 KiB

simfonija

#include<bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define int long long 
using namespace std;
const int N=1e6,M=2e3;

int a[100005],b[100005];
main()
{

    int n,m;
    cin>>n>>m;

    map<int,int>mp;

    for(int i=0;i<n;i++)
        cin>>a[i];

    for(int i=0;i<n;i++)
        cin>>b[i];

    for(int i=0;i<n;i++)
        mp[a[i]-b[i]]++;

    int neg=0,pos=0;
    for(auto x:mp){

        if(x.F<=0)
            neg+=x.S;

        else pos+=x.S;

    }

    int ans=0,anss=1e18;

    for(int i=0;i<n;i++)
        ans+=abs(a[i]-b[i]);

    anss=min(abs(ans),anss);

    for(int j=-3e6;j>=1;j--){

        ans-=pos;
        ans+=neg;

        anss=min(anss,abs(ans));
        neg+=mp[-j];
        pos-=mp[-j];
        
        if(mp[-j]==0)
            mp.erase(-j);
    }

    ans=0,pos=0,neg=0;

    for(int i=0;i<n;i++)
        ans+=abs(a[i]-b[i]);

    for(auto x:mp)
        if(x.F<0)
            neg+=x.S;

        else pos+=x.S;

    for(int j=1;j<=3e6;j++){

        ans-=neg;
        ans+=pos;

        anss=min(anss,abs(ans));
        neg-=mp[-j];
        pos+=mp[-j];
        
        if(mp[-j]==0)
            mp.erase(-j);
    }

    cout<<anss<<endl;
    return 0;
}

Compilation message (stderr)

simfonija.cpp:10:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   10 | main()
      | ^~~~

• Subtask 1: 0 / 11
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• Subtask 10: 0 / 11