POJ Charlie ' s change Charlie's conversion (multiple backpack, micro-variant)

Test instructions: Given the 4 kinds of coins on the body, respectively, 1, 5, 10, 25 denominations have more than one, requires the formation of the denomination p coins as much as possible. Outputs the respective number of 4 coins that comprise p.

Idea: multiple backpacks, 300+ms. Use the 01 Backpack + binary method. Record the number of all coins and the number of 4 coins, and note the differences between the initialized DP arrays.

1#include <iostream>2#include <cstdio>3#include <cstring>4 #defineLL Long Long5 using namespacestd;6 7 Const intn=10010, inf=-1;8 intcoin[4]={1,5,Ten, -};9 intdp[n][5], num[5];Ten intp; One  A voidcal () - { -Memset (DP,0,sizeof(DP)); the      for(intI=1; i<=p; i++) dp[i][0]=INF; -      for(intI=0; i<4; i++) -     { -         intk=1, tmp=Num[i]; +          while(1) -         { +             if(k>tmp&&tmp) k=tmp; A             Else if(k>tmp) Break; at  -              for(intJ=p; j>=k*coin[i]; j--) -             { -                 if(dp[j-k*coin[i]][0]!=inf &&dp[j][0]<dp[j-k*coin[i]][0]+k) -                 { -dp[j][0]=dp[j-k*coin[i]][0]+K; in                      for(intC=1; c<=i+1; C + +)//Number of copies -dp[j][c]=dp[j-k*Coin[i]] [C]; todp[j][i+1]+=k;//Number of Additions +                 } -             } thetmp-=K; *k<<=1; $         }Panax Notoginseng     } -     if(dp[p][0]==inf) printf ("Charlie cannot buy coffee.\n"); the     Elseprintf"Throw in%d cents,%d nickels,%d dimes, and%d quarters.\n", dp[p][1], dp[p][2], dp[p][3], dp[p][4] ); + } A  the  + intMain () - { $  $     //freopen ("Input.txt", "R", stdin); -      while(cin>>p,p) -     { the         intCnt=0; -          for(intI=0; i<4; i++)Wuyi         { thescanf"%d", &num[i]); -cnt+=num[i]*Coin[i]; Wu         } -         if(cnt<p) About         { $printf"Charlie cannot buy coffee.\n"); -             Continue; -         } - cal (); A     } +     return 0; the}

AC Code

POJ Charlie ' s change Charlie's conversion (multiple backpack, micro-variant)