Code#include <iostream> #include <cstring> #include <map> using namespace std; typedef long long LL; typedef pair<LL,LL> PII; const int N = 100010,M = 1000000007; int a[N],n,x; LL sum,ans; map<LL,LL> mp; LL qsm(LL a,LL k,int m) { LL res = 1; while(k) { if(k&...
Simon has a prime numberxand an array of non-negative integersa1, a2, ..., an. Simon loves fractions very much. Today he wrote out number on a piece of paper. After Simon led all fractions to a common denominator and summed them up, he got a fraction: , where numbertequalsx...
Prime Number【数论】 题目链接:http://codeforces.com/contest/359/problem/C 题意:给定n,xn,x和a1,a2,…,ana1,a2,…,an,对表达式st=(1xa1+1xa2+…+1xan)ts=(xa11+xa21+…+xan1)通分之后计算分子分母的gcdgcd%10000000071000000007。 思路:要求分子分母gcd=...
还有就是分子可能>分母,因为\(a\)最小可以\(= 0\) Code #include <iostream> #include <cstring> #include <map> using namespace std; typedef long long LL; typedef pair<LL,LL> PII; const int N = 100010,M = 1000000007; int a[N],n,x; LL sum,ans; map<LL,LL> mp; LL qsm(...
cf C. Prime Number #include http://codeforces.com/contest/359/problem/C 先求出分子的公因子,然后根据分子上会除以公因子会长生1,然后记录1的个数就可以。 1#include <cstdio>2#include <cstring>3#include <algorithm>4#definemaxn 2000005#defineLL __int646usingnamespacestd;78LL a[maxn];9LL n,...
Account Information Note: This consists of log-in, financial account, debit card, or credit card number in combination with any required security or access code, password, or credentials allowing access to an account Bank account number Credit card number Debit card number Other financial information...
, n); else printf("%d is not a prime number.", n); return 0; } Run Code Output Enter a positive integer: 29 29 is a prime number. In the program, a for loop is iterated from i = 2 to i < n/2. In each iteration, whether n is perfectly divisible by i is checked ...
7. Prime Check Function Variants Write a program in C to check whether a number is a prime number or not using the function. Pictorial Presentation: Sample Solution: C Code: #include<stdio.h>intPrimeOrNot(int);intmain(){intn1,prime;printf("\n\n Function : check whether a number is ...
函数getindex 应返回字符串 s 序号。如果传入的参数 s 不是一个代表星期的字符串,则返回-1。 裁判测试程序样例: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #include<stdio.h>#include<string.h>#defineMAXS80intgetindex(char*s);intmain(){int n;char s[MAXS];scanf("%s",s);n=getindex(...
to complex programs like Fibonacci series, Prime Numbers, and pattern printing programs. All the programs have working code along with their output. The programs are categorized, with each section having related programs. We suggest you to learn the basics of C language from our C tutorial, ...