View Code of Problem 10

#include <bits/stdc++.h>
using namespace std;
int run_blank(int a[]){
	for(int i=3;i>=1;i--){
		if(a[i]==0){
			int k=i-1;
			while(k>=0){
				swap(a[k],a[k+1]);
				k--;
			}
		}
	} 
}
int main() {
	int t;
	cin>>t;
	while(t--){
		int a[4];
		for(int i=0;i<4;i++)
			cin>>a[i];
		run_blank(a);
		run_blank(a);
		for(int i=3;i>=1;i--){
			if(a[i]==a[i-1]){
				a[i]=2*a[i];
				a[i-1]=0;
			}
			run_blank(a);
			run_blank(a); 
		}
		for(int i=0;i<3;i++)
			cout<<a[i]<<" " ;
		cout<<a[3]<<endl;
	}
}