28 lines
378 B
C++
28 lines
378 B
C++
#include<bits/stdc++.h>
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using namespace std;
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string s[55];
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int n;
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int idx[55];
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inline bool cmp(int a,int b)
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{
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return s[a]+s[b]>s[b]+s[a];
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}
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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while(cin>>n,n!=0)
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{
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for(int i=0;i<n;i++)
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{
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idx[i]=i;
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cin>>s[i];
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}
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sort(idx,idx+n,cmp);
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for(int i=0;i<n;i++) cout<<s[idx[i]];
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cout<<endl;
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}
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return 0;
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}
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