题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1032 Problem Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property…
The 3n + 1 problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 22148    Accepted Submission(s): 8276 Problem Description Problems in Computer Science are often classified as belonging to a c…
The 3n + 1 problem Problem Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property of an algorithm whose classificat…
还以为要递归推一推的 结果暴力就过了 要注意 i,j 大小 #include <iostream> using namespace std; int a,b; long long cnt,n,ans; int main() { while(~scanf("%d%d",&a,&b)) { ans=; int p=a,q=b; if(p>q) swap(p,q); for(int i=p;i<=q;i++) { cnt=; n=i; ) { cnt+…
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CODE FESTIVAL 2017 qual B B - Problem Set 确实水题,但当时没想到map,用sort后逐个比较解决的,感觉麻烦些,虽然效率高很多.map确实好写点. 用map: #include<iostream> #include<cstdio> #include<cstdlib> #include<map> using namespace std; map<int,int>mp; int main() { int n,…
The 3n + 1 problem Problem Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property of an algorithm whose classificat…
题目链接:https://cn.vjudge.net/problem/HDU-1032 水题 代码 #include <cstdio> #include <algorithm> using namespace std; const int MAX=8388608; int num[MAX], a, b; int solve(int n){ if (n<MAX && num[n]) return num[n]; if (n==1) return 1; if (n…
u Calculate e Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 28686    Accepted Submission(s): 12762 Problem Description A simple mathematical formula for e is where n is allowed to go to infini…
Barricade Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1418    Accepted Submission(s): 417 Problem Description The empire is under attack again. The general of empire is planning to defend h…