#include<cstdio>
#include<iostream>
#include<cstring>
#include<algorithm>
#include<cmath>
using namespace std;
int temp[20],ans[20];
int main()
{
string input,output;
int n,k,count,i,j,len;
while(cin>>n&&n!=0)
{
output="";
memset(ans,0,sizeof(ans));
for(i=0;i<n;i++)
{
cin>>input;
memset(temp,0,sizeof(temp));
len=input.length();
count=0;
for(j=0;j<len;j++)
{
if(isdigit(input[len-1-j]))
{
temp[count]=input[len-1-j]-'0';
count++;
}
}
for(j=0;j<20;j++)
{
ans[j]=temp[j]+ans[j];//大数相加的做法,可以记住
ans[j+1]+=ans[j]/10;
ans[j]=ans[j]%10;
}
}
int j;
for(j=0;j<20;j++)
{
if(ans[20-1-j]!=0)
break;
}
k=20-1-j;
k=k>=count-1?k:count-1;//前导0的情况
for(j=0,i=1;j<=k;j++,i++)
{
output+=ans[j]+'0';
if(j==1)
{
output+=".";
i=0;
}
if(i%3==0&&i!=0&&i!=k-1)
{
output+=",";
}
}
output+="$";
reverse(output.begin(),output.end());
cout<<output<<endl;
}
return 0;
}
2018年省赛热身赛第3场——C Total AmountTotal Amount(补题)
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转载自blog.csdn.net/qq_42232118/article/details/81776739
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