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  • 2.3.4 Money Systems

    Money Systems

    The cows have not only created their own government but they have chosen to create their own money system. In their own rebellious way, they are curious about values of coinage. Traditionally, coins come in values like 1, 5, 10, 20 or 25, 50, and 100 units, sometimes with a 2 unit coin thrown in for good measure.

    The cows want to know how many different ways it is possible to dispense a certain amount of money using various coin systems. For instance, using a system of {1, 2, 5, 10, ...} it is possible to create 18 units several different ways, including: 18x1, 9x2, 8x2+2x1, 3x5+2+1, and many others.

    Write a program to compute how many ways to construct a given amount of money using supplied coinage. It is guaranteed that the total will fit into both a signed long long (C/C++) and Int64 (Free Pascal).

    PROGRAM NAME: money

    INPUT FORMAT

    The number of coins in the system is V (1 <= V <= 25).

    The amount money to construct is N (1 <= N <= 10,000).

    Line 1: Two integers, V and N
    Lines 2..: V integers that represent the available coins (no particular number of integers per line)

    SAMPLE INPUT (file money.in)

    3 10
    1 2 5
    

    OUTPUT FORMAT

    A single line containing the total number of ways to construct N money units using V coins.

    SAMPLE OUTPUT (file money.out)

    10
    
    {
    ID: makeeca1
    PROG: money
    LANG: PASCAL
    }
    program money;
    var n,i,j,v,t:longint;
        f:array[0..10000]of qword;
    begin
      assign(input,'money.in');reset(input);
      assign(output,'money.out');rewrite(output);
      readln(n,v);
      fillchar(f,sizeof(f),0);f[0]:=1;
      for i:=1 to n do
      begin
        read(t);
        for j:=t to v do inc(f[j],f[j-t]);
      end;
      writeln(f[v]);
      close(output);
    end.
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  • 原文地址:https://www.cnblogs.com/makeecat/p/3274586.html
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