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31 lines
430 B
C++
31 lines
430 B
C++
#include <iostream>
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#include <iomanip>
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#include <cstring>
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#include <cstdio>
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#include <ctime>
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#include <cmath>
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typedef long long l;
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typedef double d;
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typedef char c;
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using namespace std;
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int main(){
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c a[10000];
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cin >>a;
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for(int i=0;i<strlen(a);i++){
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if(a[i]=='A'){
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a[i]='T';
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}
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else if(a[i]=='T'){
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a[i]='A';
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}
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else if(a[i]=='G'){
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a[i]='C';
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}
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else if(a[i]=='C'){
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a[i]='G';
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}
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}
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cout <<a;
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return 0;
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}
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