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yes, that is true.....
but i want to find the reason for run time error............
anyway, thanks..........

there is no division operation (except by a constant: 3) in my code (i think)

can anyone tell me why am i getting RE? I cant figure it out :(
#include <cstdio>
#include <vector>

#define MAX 3002

using namespace std;

int f1[MAX], f2[MAX];

int e[MAX][2];

vector<int> a[MAX];

int main() {
int i, j, s, t, n, m, test;
long long count;

scanf("%d", &test);
while(test ...

People are solving this within a pretty small time limit........................I could get no better idea than brute force simulation.........Any idea?

---thanks.....got it.....
what is the result for
p = 1, q = 2147483647
p = 100000, q = 200000
Thanks in advance.....