Discussion @ 1246. Tethered Dog @ Timus Online Judge

The coordinates are a pair of integers .... It's right ?

Posted by ryu 10 Jan 2009 23:18

I got AC after used double (instead long long).
Then I wrote code:

scanf("%d", &N);
for (int i = 0; i < N; ++i) {
    P[i].x = ReadAndCheck();
    P[i].y = ReadAndCheck();
}

double ReadAndCheck() {
char s[100];
scanf("%s", s);
for (int i = 0; s[i]; ++i)
    Assert(isdigit(s[i]));
double r;
sscanf(s, "%lf", &r);
return r;
}

To all appearences Assert was called (4 test).

Did you think about negative numbers?

Posted by Vladimir Yakovlev (USU) 11 Jan 2009 00:47

Re: The coordinates are a pair of integers .... It's right ?

Posted by Fyodor Menshikov 11 Jan 2009 15:04

I've got AC reading ints. Please change

Assert(isdigit(s[i]));
to
Assert(isdigit(s[i]) || s[i] == '-');

and test if Assert will be called.

Re: The coordinates are a pair of integers .... It's right ?

Posted by Fyodor Menshikov 11 Jan 2009 15:04

I've got AC reading ints. Please change

Assert(isdigit(s[i]));
to
Assert(isdigit(s[i]) || s[i] == '-');

and test if Assert will be called.

Discussion of Problem 1246. Tethered Dog