Codeforces Round #777 (Div. 2) 补题题解

    #include<bits/stdc++.h>
    
    using namespace std;
    
    int T;
    
    int get1(int x){
    	return x % 3;
    }
    
    int get2(int x){
    	return x / 3;
    }
    
    int main()
    {
    	cin>>T;
    	while(T -- ){
    		int n;
    		cin>>n;
    		int x = get1(n);
    		int y = get2(n);
    		if(x == 1){
    			cout<<"1";
    			for(int i = 0; i < 2 * y; i ++ ){
    				if(i % 2 == 0){
    					cout<<"2";
    				}
    				else if(i % 2 == 1){
    					cout<<"1";
    				}