SprayT

摘要： Geometry DartsTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 688Accepted Submission(s): 178Proble... 阅读全文

摘要： 爆头Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1561Accepted Submission(s): 653Problem Descripti... 阅读全文

摘要： 白书上部分代码#include #include #include #include using namespace std;const double esp = 1e-10;struct Point{ double x,y; Point(double x = 0,double y = ... 阅读全文

摘要： 集训开始啦 阅读全文

摘要： 貌似就是排序。。。。#include#include#includeusing namespace std;#define N 2000struct tt{ int score,net_goal,total_ball; char team[N];} a[N];char stra[N],s... 阅读全文

摘要： 本来是做hdu2838的，但貌似涉及到逆序数这个概念，于是就学习了下，后来求逆序数可以用归并排序，也就顺带把这个排序学了下（其实早就该掌握的），搞acm真的是学无止境啊！ 对于n个元素，一般规定有一个标准排列（貌似大部分都是以一个递增的排列为准）对于这n个元素如果与标准排列的先后顺序不同，就说... 阅读全文

摘要： 二进制的多重背包CoinsTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5564Accepted Submission(s): 2297Probl... 阅读全文

摘要： 背包题，不过要注意是n#include#define N 250005int max(int a,int b){ return a>b?a:b;}int dp[N];struct tt{ int w,num;}a[105];int main(){ int n,i,j,k; w... 阅读全文

摘要： 开始wa了几次后来重写一次就A了不知坑在哪#include#include#define N 1000int a[N],b[N],sum[N];int lena,lenb,len,flag,c;char s[N];void init(){ memset(a,0,sizeof(a)); m... 阅读全文

摘要： Summation of Four PrimesInput: standard inputOutput: standard outputTime Limit: 4 secondsEuler proved in one of his classic theorems that prime numbers are infinite in number. But can every number be expressed as a summation of four positive primes? I don’t know the answer. May be you can help!!! I 阅读全文