简单模拟题。

#include<cstdio>
#include<cstring>
#include<cmath>
#include<vector>
#include<map>
#include<stack>
#include<queue>
#include<string>
#include<algorithm>
using namespace std; char s[];
int p; int main()
{
scanf("%s",s);
for(int i=;s[i];i++) if(s[i]=='E') p=i; if(s[]=='-') printf("%c",s[]); int num=;
for(int i=p+;s[i];i++) num=num*+s[i]-''; if(s[p+]=='-')
{
printf("0.");
for(int i=;i<num-;i++) printf("");
for(int i=;s[i];i++)
{
if(s[i]=='E') break;
if(s[i]=='.') continue;
else printf("%c",s[i]);
}
} else
{
int d;
for(int i=;s[i];i++)
{
if(s[i]=='.') d=i;
}
if(p-d->num)
{
if(s[]!='') printf("%c",s[]);
for(int i=;i<+num;i++) printf("%c",s[i]);
printf(".");
for(int i=+num;s[i];i++)
{
if(s[i]=='E') break;
printf("%c",s[i]);
}
}
else
{
for(int i=;s[i];i++)
{
if(s[i]=='E') break;
if(s[i]=='.') continue;
if(i==&&s[i]=='') continue;
printf("%c",s[i]);
}
for(int i=;i<num-(p-d-);i++) printf("");
}
}
return ;
}

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