C - Prime number or not Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice FZU 1649 Description Your task is simple.Give you a number N, you should judge whether N is a prime number or not. Input There…
1552: Friends Time Limit: 3 Sec Memory Limit: 256 MBSubmit: 163 Solved: 34[Submit][Status][Web Board] Description On an alien planet, every extraterrestrial is born with a number. If the sum of two numbers is a prime number, then two extraterrestri…
#include <cstdio> #include <ctime> #include <cmath> #include <algorithm> using namespace std; typedef long long ll; const int N = 108; const int S = 10; ll mult_mod(ll a, ll b, ll c) { a %= c; b %= c; ll ret = 0; while(b) { if(b&am…
Problem about GCD Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 470 Accepted Submission(s): 77 Problem Description Given integer m. Find multiplication of all 1<=a<=m such gcd(a, m)=1 (cop…