水题,开根号判断大致范围,再找即可. #include<cstdio> #include<cmath> #include<cstdlib> using namespace std; int main(){ int t, CASE(0); long long int n; scanf("%d", &t); while(t--){ scanf("%lld", &n); long long int m = sqrt(n)…
1008 - Fibsieve`s Fantabulous Birthday PDF (English) Statistics Forum Time Limit: 0.5 second(s) Memory Limit: 32 MB Fibsieve had a fantabulous (yes, it's an actual word) birthday party this year. He had so many gifts that he was actually thinking o…
Elevator Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 56481 Accepted Submission(s): 30942 Problem Description The highest building in our city has only one elevator. A request list is made…
Aladdin and the Flying Carpet Time Limit:3000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1341 Appoint description: System Crawler (2016-07-08) Description It's said that Aladdin had to solve seven myst…
A - Bi-shoe and Phi-shoe Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1370 Appoint description: System Crawler (2016-07-08) Description Bamboo Pole-vault is a massively popular sport in X…
Extended Traffic Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1074 Appoint description: System Crawler (2016-05-03) Description Dhaka city is getting crowded and noisy day by day. Certai…
Conquering Keokradong Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1048 Description This winter we are going on a trip to Bandorban. The main target is to climb up to the top of Keokradong.…
D - Harmonic Number Time Limit:3000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1234 Description In mathematics, the nth harmonic number is the sum of the reciprocals of the first n natural numbers: In th…
E - Help Hanzo Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1197 Description Amakusa, the evil spiritual leader has captured the beautiful princess Nakururu. The reason behind this is he ha…
B - Pairs Forming LCM Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1236 Description Find the result of the following code: long long pairsFormLCM( int n ) { long long res = 0; for( in…
Maya Calendar Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 64795 Accepted: 19978 Description During his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. From an old knotted message, profes…
链接:http://poj.org/problem?id=1008 Maya Calendar Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 71745 Accepted: 22083 Description During his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. F…
题目链接:http://lightoj.com/volume_showproblem.php?problem=1220 题意:已知 x=bp 中的 x 求最大的 p,其中 x b p 都为整数 x = (p1a1*p2a2*p3a3*...*pkak), pi为素数;则结果就是gcd(a1, a2, a3,...,ak); 当x为负数时,要把ans缩小为奇数; #include <stdio.h> #include <string.h> #include <iostream&…
题目链接:http://lightoj.com/volume_showproblem.php?problem=1215 题意:已知三个数a b c 的最小公倍数是 L ,现在告诉你 a b L 求最小的 c ; 其实就是告诉你(最小公倍数LCM)LCM(x, y) = L 已知 x 和 L 求 最小的 y ; L = LCM(x, y)=x*y/gcd(x, y);如果把x,y,L写成素因子之积的方式会很容易发现 L 就是 x 和 y 中素因子指数较大的那些数之积; 例如LCM(24, y)…
题目链接:http://lightoj.com/volume_showproblem.php?problem=1197 题意:给你两个数 a b,求区间 [a, b]内素数的个数, a and b (1 ≤ a ≤ b < 231, b - a ≤ 100000). 由于a和b较大,我们可以筛选所有[2, √b)内的素数,然后同时去筛选掉在区间[a, b)的数,用IsPrime[i-a] = 1表示i是素数: ///LightOj1197求区间素数的个数; #include<stdio.h&g…