OJ Board

why WA?someone help plz.........
#include<iostream>
#include<cstdio>
#include<cstdlib>
using namespace std;
#define MAX 3002
int main()
{

int a,b;
int A[MAX];
while(cin>>a)
{
int flag =1;
for(int i=1;i<=a;i++)
{
scanf("%d",&A[i]);
}
for(int i=1;i<a;i++)
{
b=abs(A[i]-A[i+1]);
{
if(b ...

why WA?someone help plz......
#include<iostream>
#include<cstdio>
#include<cstdlib>
using namespace std;
#define MAX 3002
int main()
{

int a,b,flag =1;
int A[MAX];
while(cin>>a)
{
for(int i=1;i<=a;i++)
{
scanf("%d",&A[i]);
}
for(int i=1;i<a;i++)
{
b=abs(A[i]-A[i+1]);
{
if(b<1 ||b>a-1 ...

.

why wa?checked a lot.someone help plz....
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
long long int a,b;
while(scanf("%lld %lld\n",&a,&b))
{

if(a==0 && b==0) return 0;
int m,n;
int count=0;
int p=0;
while(a||b)
{
m=a%10;
n=b%10;
a=a/10;
b=b/10;
if(m+n+p>9 ...

why WA?

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
long long int a,b;
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
while(scanf("%lld %lld\n",&a,&b))
{

if(a==0 && b==0) return 0;
int m,n;
int count=0;
int p=0;
while(a||b)
{
m=a%10;
n=b ...