34 lines
1016 B
C++
34 lines
1016 B
C++
#include<iostream>
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#include<math.h>
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using namespace std;
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int const MAX =0x3f3f3f3f;
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double dp[2][366];
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double exchange[366];
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double commissionRate = 0.97;
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int mask =100;
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int main()
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{
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int days=0;
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while(scanf("%d",&days) && days !=0 )
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{
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memset(dp,-MAX,sizeof(dp));
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dp[0][1]=100000.0;
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for(int i=1;i<=days;i++ )
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scanf("%lf",&exchange[i]);
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dp[1][1] = (dp[0][1]/exchange[1])*commissionRate;
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for(int i=2;i<=days;i++)
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{
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if(dp[0][i-1] > dp[1][i-1]*exchange[i]*commissionRate)
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dp[0][i] = (int)dp[0][i-1]+0.0;
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else
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dp[0][i] =(int)(dp[1][i-1]*exchange[i]*commissionRate)+0.0;
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if(dp[1][i-1] > (dp[0][i-1]/exchange[i])*commissionRate)
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dp[1][i] = (int)(dp[1][i-1])+0.0;
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else
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dp[1][i] =(int)((dp[0][i-1]/exchange[i])*commissionRate)+0.0;
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}
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printf("%.2lf\n",dp[0][days]/100);
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}
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return 0;
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}
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