题目连接:357 - Let Me Count The Ways
题目大意:有5种硬币, 面值分别为1、5、10、25、50,现在给出金额,问可以用多少种方式组成该面值。
解题思路:和uva674是一样的, 只是上限不一样, 还有注意下输出。
#include <stdio.h> #include <string.h> const int N = 30005; const int val[5] = {1, 5, 10, 25, 50}; long long cnt[N]; void Init() { memset(cnt, 0, sizeof(cnt)); cnt[0] = 1; for (int i = 0; i < 5; i++) { for (int j = val[i]; j < N; j++) cnt[j] += cnt[j - val[i]]; } } int main() { Init(); int n; while (scanf("%d", &n) == 1) { if (cnt[n] <= 1) printf("There is only 1 way to produce %d cents change. ", n); else printf("There are %lld ways to produce %d cents change. ", cnt[n], n); } return 0; }