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#include<bits/stdc++.h>

using namespace std;

int main(){

string a;

cin>>a;

int len=a.size();

string x[8]={"0","1","10","11","100","101","110","111"};

string y[8]={"000","001","010","011","100","101","110","111"};

cout<<x[a[0]-'0'];

for(int j=1;j<len;j++){

	cout<<y[a[j]-'0'];

}

}

#include<bits/stdc++.h> using namespace std; int main(){ string a; cin>>a; int len=a.size(); string x[8]={"0","1","10","11","100","101","110","111"}; string y[8]={"000","001","010","011","100","101","110","111"}; cout<<x[a[0]-'0']; for(int j=1;j<len;j++){ cout<<y[a[j]-'0']; } }

区块代码：

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,n[31]={0},i=0;
	cin>>a;
	while(a){
		i++;
		n[i]=a%2;
		a/=2;
	}
	for(int j=i;j>=1;j--){
		cout<<n[j];
		
	}
}

1. #include<bits/stdc++.h> using namespace std; int main() { int a,n[31]={0},i=0; cin>>a; while(a){ i++; n[i]=a%2; a/=2; } for(int j=i;j>=1;j--){ cout<<n[j]; } }``````