Description Partychen like to do mathematical problems. One day, when he was doing on a least common multiple(LCM) problem, he suddenly thought of a very interesting question: if given a number of S, and we divided S into some numbers , then what is…
题目描述: 源码: /**/ #include"iostream" using namespace std; int MinComMultiple(int n, int m) { int x, y, tmp; long long s; s = (long long)n * (long long)m;//避免int的乘积越界 if(n > m) { tmp = n; n = m; m = tmp; } tmp = m % n; while(tmp != 0) { m = n; n…
问题描述: AC源码: 此题考察动态规划,解题思路:遍历(但有技巧),在于当前i各之和为负数时,直接选择以第i+1个为开头,在于当前i各之和为正数时,第i个可以不用作为开头(因为前i+1个之和一定大于第i+1个的值) #include"iostream" using namespace std; int main() { int t, n, start, end, sum, max, tmp; int a[100000]; scanf("%d", &t);…
题目描述: 源码: 需要注意,若使用cin,cout输入输出,会超时. #include"iostream" #include"memory.h" #define MAX 1000000 using namespace std; int index[MAX]; int main() { memset(index, -1, sizeof(index)); index[1] = 0; int sum = 0; for(int i = 2; i < MAX; i++…
问题描述: 源码: 主要要注意输出格式. #include"iostream" #include"iomanip" #include"algorithm" #include"string" using namespace std; struct Person { string name; int count; int score; }; bool cmp(Person a, Person b) { if(a.count >…