sortings strings *1700

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C++ Code:

#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
const int N=5e4+3;
int n;
struct node{
   string s;
}a[N];
bool cmp(node x,node y){
	return x.s+y.s<y.s+x.s;
}
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
    	cin>>a[i].s;
	sort(a+1,a+n+1,cmp);
	for(int i=1;i<=n;i++) cout<<a[i].s;
	return 0;
}


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