OJ Board

I use int and got AC
But long long results in WA.
Who can explain why?

I'd made all the test data on the boardcotrect .
But I got WA all the time.
Here is my code
#include<stdio.h>
char a[101][101];
int max;
int main()
{

int b[101];
char n;
int i=0,j=0;
int k,m,p=0;
while(scanf("%c",&n)==1)
{
if(n!='\n')
{
a [j]=n;
j++;
}

if(n=='\n')
{
b =j;
if ...

I'd made all the test data cotrect on the board.
But I got WA all the time.
Here is my code
#include<stdio.h>
char a[101][101];
int max;
int main()
{

int b[101];
char n;
int i=0,j=0;
int k,m,p=0;
while(scanf("%c",&n)==1)
{
if(n!='\n')
{
a [j]=n;
j++;
}

if(n=='\n')
{
b =j;
if(j>max ...

I'd made all the test cases correct
but i still got WA why?
The following are my code

#include<iostream>
#include<string>
using namespace std;
long long power(long a,long b);
int main()
{
long long m,n;
long long k=0;
char str[200];
long long rev[1000];
long long sum=0;
bool f=0;
while(cin ...

WHY WA
#include<iostream>
using namespace std;
int main()
{
int num;
bool intersect = false;
int t1,t2;
int xstart,ystart,xend,yend,xleft,ytop,xright,ybottom;
int a,b,c,d;
cin >> num;
while(cin>>xstart>>ystart>>xend>>yend>>xleft>>ytop>>xright>>ybottom)
{
a = xright;
b = ytop;
c = xleft ...