View Code of Problem 65

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