View Code of Problem 10

#include<stdio.h>
int main(){
	int n,i,j;
	int a[4];
	scanf("%d",&n);
	while(n--){
		for(i=0;i<4;i++){
			scanf("%d",&a[i]);
		}
		int k[4] ={0};
		for(j=0;j<4;j++){
			for(i=3;i>0;i--){
				if(a[i]==a[i-1]&&a[i]!=0&&k[i]==0&&k[i-1]==0){
					a[i]=2*a[i];
					a[i-1]=0;
					k[i]=1;
				}else if(a[i]==0&&i!=0){
					a[i]=a[i-1];
					a[i-1]=0;
				}
				if(a[i]==0&&i==0)
					break;
			}
		}
		for(i=0;i<3;i++){
			printf("%d ",a[i]);
		}
		printf("%d\n",a[3]);
	}
	return 0;
}