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approx.c
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approx.c
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#include<stdio.h>
int main()
{
int x,y,a,b,t,r,s=103993;
a=103993,b=33102;
scanf("%d",&t);
while(t--)
{ int d,c=0,s=a;
scanf("%d",&d);
if(d==0)
{printf("3");}
else
printf("3.");
r=s%b;
while(d--)
{ c=0;
while(r<=b)
{r*=10;c++;}
if(c>=1)
c--;
while(c-- && d>0)
{
printf("0");
d--;
}
s=r/b;
r=r%b;
int n[10]={0},j=0;
while(s>0)
{
n[j]=s%10;
s/=10;
j++;
}
while(j-- && d>=0)
{
printf("%d",n[j]);
if(j!=0)
d--;
}
}
printf("\n");
}
return 0;
}