walk.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
inline int get_int()
{
	int n=0;
	char c=0;
	while(c<33)
		c=getchar_unlocked();
	while(c>='0'&&c<='9')
	{
		n=(n<<3)+(n<<1)+(c-'0');
		c=getchar_unlocked();
	}
	return n;
}
int main(int argc, char const *argv[])
{
	int i,tesc,n;
	int qi,min;
	tesc=get_int();
	while(tesc--)
	{
		n=get_int();
		min=0;
		for (i = 0; i < n; ++i)
		{
			qi=get_int();
			min=min>(qi+i)?min:(qi+i);
		}
		printf("%d\n", min);
	}
	return 0;
}