19 lines
311 B
C++
19 lines
311 B
C++
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#include<bits/stdc++.h>
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using namespace std;
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int main()
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{
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int i,j,temp;
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string s;
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cin>>s;
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for(i=0;i<s.length();i+=2)
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{
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for(j=i+2;j<s.length();j=j+2)
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{
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if(s[i]>s[j])
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{
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swap(s[i],s[j]);
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}
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}
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}
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cout<<s<<endl;
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}
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