439D - Devu and his Brother - CodeForces Solution


binary search sortings ternary search two pointers *1700

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C++ Code:

#include<bits/stdc++.h>
#define lng long long int
using namespace std;


int main(){
    
    lng n,m;
    cin>>n>>m;
    
    int a[n];
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    int b[m];
    for(int i=0;i<m;i++){
        cin>>b[i];
    }
    
     
     sort(a,a+n);
     sort(b,b+m,greater<int>());
     
     lng cnt=0;
     for(int i=0;i<min(n,m)&&a[i]<b[i];i++){
         cnt+=abs(a[i]-b[i]);
     }
    
    cout<<cnt<<endl;
    
    return 0;
}


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