uva674 Coin Change ——完全背包

link:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=615

和完全背包一样的思想。

 1 #include <iostream>
 2 #include <cstdio>
 3 #include <cstdlib>
 4 #include <cstring>
 5 #include <cmath>
 6 #include <cctype>
 7 #include <algorithm>
 8 #include <queue>
 9 #include <deque>
10 #include <queue>
11 #include <list>
12 #include <map>
13 #include <set>
14 #include <vector>
15 #include <utility>
16 #include <functional>
17 #include <fstream>
18 #include <iomanip>
19 #include <sstream>
20 #include <numeric>
21 #include <cassert>
22 #include <ctime>
23 #include <iterator>
24 const int INF = 0x3f3f3f3f;
25 const int dir[8][2] = {{-1,0},{1,0},{0,-1},{0,1},{-1,-1},{-1,1},{1,-1},{1,1}};
26 using namespace std;
27 int a[5]={1,5,10,25,50};
28 int f[7777];
29 int main(void)
30 {
31     ios::sync_with_stdio(false);
32 #ifndef ONLINE_JUDGE
33     freopen("in.txt","r",stdin);
34 #endif
35     int n;
36     while (cin>>n) {
37         memset(f,0,sizeof(f)); f[0]=1;
38         for (int i = 0; i < 5; ++i) {
39             for (int j=a[i]; j<=n;++j) {
40                 f[j]+=f[j-a[i]];
41             }
42         }
43         cout<<f[n]<<endl;
44     }
45     return 0;
46 }

o(╯□╰)o
认真理解一下这种思想就行了。不难

posted on 2013-08-15 17:59  aries__liu  阅读(208)  评论(0编辑  收藏  举报