link:http://acm.hdu.edu.cn/showproblem.php?pid=1114
只不过求得是最小值。没什么可说的，连我都会做……o(╯□╰)o
1 /* 2 ID: zypz4571 3 LANG: C++ 4 TASK: pig.cpp 5 */ 6 7 #include <iostream> 8 #include <cstdio> 9 #include <cstdlib> 10 #include <cstring> 11 #include <cmath> 12 #include <cctype> 13 #include <algorithm> 14 #include <queue> 15 #include <deque> 16 #include <queue> 17 #include <list> 18 #include <map> 19 #include <set> 20 #include <vector> 21 #include <utility> 22 #include <functional> 23 #include <fstream> 24 #include <iomanip> 25 #include <sstream> 26 #include <numeric> 27 #include <cassert> 28 #include <ctime> 29 #include <iterator> 30 const int INF = 0x3f3f3f3f; 31 const int dir[8][2] = {{-1,0},{1,0},{0,-1},{0,1},{-1,-1},{-1,1},{1,-1},{1,1}}; 32 using namespace std; 33 int f[11111],c[555],w[555], V, n; 34 void completepack(int c,int w) { 35 for(int v=c;v<=V;++v) 36 f[v]=min(f[v],f[v-c]+w); 37 } 38 int main ( int argc, char *argv[] ) 39 { 40 #ifndef ONLINE_JUDGE 41 freopen("in.txt", "r", stdin); 42 #endif 43 ios::sync_with_stdio(false); 44 int t; cin>>t; 45 while (t--) { 46 int e, F; cin>>e>>F; V=F-e; cin>>n; 47 for(int i=0;i<n;++i) cin>>c[i]>>w[i]; 48 memset(f,INF,sizeof(f)); f[0]=0; 49 for (int i=0;i<n;++i) completepack(w[i],c[i]); 50 if(f[V]==INF) cout<<"This is impossible. "; 51 else cout<<"The minimum amount of money in the piggy-bank is "<< 52 f[V]<<". "; 53 } 54 return EXIT_SUCCESS; 55 } /* ---------- end of function main ---------- */
o(╯□╰)o