OJ Board

hi, i can't understand why 11 to 33 is -1?

can't you just do this ? 11 -> 22 ->> 33

do you assume that row has the same number as col?
maybe this is the one that causes RTE

Hello, I have tried anything suggested before and still got WA
Here is my code

#include <cstdio>
#include <iostream>
#include <cstring>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <math.h>
using namespace std ...