OJ Board

you do a lot of strlen() that spent a lot of time.
try to calcule the length at the start and save it in a var.

I don't know why always get WA. I can't find any mistake in the code. I hope somebody could find it.
thanks

#include <stdio.h>
#define SIZE 1000000

int main()
{
char cad1[SIZE], cad2[SIZE];
int x,y;

while ( scanf("%s %s",cad1,cad2) == 2 )
{
for (x = 0, y = 0; cad1[x] != '\0' && cad2[y ...