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  • 1755: [Usaco2005 qua]Bank Interest

    1755: [Usaco2005 qua]Bank Interest

    Time Limit: 5 Sec  Memory Limit: 64 MB
    Submit: 187  Solved: 162
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    Description

    Farmer John made a profit last year! He would like to invest it well but wonders how much money he will make. He knows the interest rate R (an integer between 0 and 20) that is compounded annually at his bank. He has an integer amount of money M in the range 100..1,000,000. He knows how many years Y (range: 0..400) he intends to invest the money in the bank. Help him learn how much money he will have in the future by compounding the interest for each year he saves. Print an integer answer without rounding. Answers for the test data are guaranteed to fit into a signed 32 bit integer. 看了样例输入输出就知道怎么回事了..........

    Input

    * Line 1: Three space-separated integers: R, M, and Y

    Output

    * Line 1: A single integer that is the number of dollars FJ will have after Y years.

    Sample Input

    5 5000 4

    INPUT DETAILS:

    5% annual interest, 5000 money, 4 years

    Sample Output

    6077

    OUTPUT DETAILS:

    Year 1: 1.05 * 5000 = 5250
    Year 2: 1.05 * 5250 = 5512.5
    Year 3: 1.05 * 5512.50 = 5788.125
    Year 4: 1.05 * 5788.125 = 6077.53125
    The integer part of 6077.53125 is 6077.

    HINT

     

    Source

    Gold

    题解:我猜这个应该是除了1000之外我做过的最水的bzoj题了= =,不用多解释,看看样例就明白怎么回事了

     1 /**************************************************************
     2     Problem: 1755
     3     User: HansBug
     4     Language: Pascal
     5     Result: Accepted
     6     Time:0 ms
     7     Memory:220 kb
     8 ****************************************************************/
     9  
    10 var l,m,n:longint;
    11 begin
    12      readln(n,m,l);
    13      writeln(trunc(extended(m)*exp(ln((100+n)/100)*l)));
    14      readln;
    15 end. 
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  • 原文地址:https://www.cnblogs.com/HansBug/p/4428330.html
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