OJ Board

the volumn of 2 cones can be calculated by this formula..

1/3 * pi * r * r * h

r of the circle of its bottom

h is the height of the cone

Could anyone please explain what this problem asks?
I can't understand what it wants

why do i always get wa? i've tried all the test data above and got the same answer.. :( [c]#include <stdio.h> #include <stdlib.h> #define NN 10000 int comp(const void *a, const void *b) { return *(int *)b - *(int *)a; } int main(void) { int not, j, tmp, big; int i, n, sum, v[NN]; while (scanf("...

I consider long long & if d<0 but still got wa, could anyone plz help me? [c]#include <iostream> using namespace std; int main(void) { int primes[25]= { 2,3,5,7,11,13,17,19,23,29,31,37,41,43, 47,53,59,61,67,71,73,79,83,89,97 }; int pnums[25], df[25], n, i, j, fact, out; long long d; while (cin>>...

Would you please give some hint ?
I use sqrt() only once, but I still got TLE ... Q Q"

I tested the data above, my answers were the same as yours. But why I still got WA.. :-? Please help.. I just test all a+b when a!=b [c]#include <stdio.h> #include <limits.h> #include <math.h> int main(void) { int n, list[1000], k, max, ans, cases = 0, i, j, m, ques[25]; while (scanf("%d",...

Thanks a lot ! ^_^
I got AC.

i try to use recursion to solve this problem..
but it was "runtime error?!"
could anyone please tell me why ?

here's my code ..

[c] Q_Q i was wrong.. [/c]

i try to use recursion to solve this problem.. but it was "runtime error?!" could anyone please tell me why ? here's my code .. [c]#include <stdio.h> int c(int n, int r) { if (n==r) return 1; if ((r==1)||(!r)) return n; return (c(n-1,r-1)+c(n-1,r)); } int main(void) { int n, r; while (scan...

Plz help :~~~ [c]#include <stdio.h> #include <string.h> #include <stdlib.h> #define NN 1000 int len, x; char ans[NN]; struct set { char ch; int fre; }data[NN]; void visit(int n) { int i; if (n<len) { for (i=0;i<x;i++) if (data .fre) { ans[n] = data .ch; data .fre--; visit(n+1); data .fre++; } } else...

I try all the test datas but my code is still wrong plz help.. [c]#include <stdio.h> int main(void) { int n, ans, high = 10, low = 0; char dir[20]; while (scanf("%d",&n)==1) { if (!n) break; scanf(" %[^\n]", dir); if (!strcmp(dir,"too high")) if (n<high) high = n; i...

Input:
Output:

why it gets wa ? plz.. [c]#include <stdio.h> #include <math.h> int prime[40]; int is_prime(int n) { int i; for (i=0;prime *prime <=n;i++) if (!(n%prime )) return 0; return 1; } void make_table(void) { int i, index = 1; prime[0] = 2; for (i=3;i<=150;i+=2) if (is_prime(i)) prime[index++] = i; } int ma...

Why it's output limit exceed :~~~ if n=0, it'll break..>< help me, plz... [c]#include <stdio.h> #include <stdlib.h> int comp(const void *a, const void *b) { return *(int *)a - *(int *)b; } int rev(int n) { int m; for (m=0;n;n/=10) { m*=10; m+=n%10; } return m; } int sort(int n) { int d[10], i, m; fo...

Sorry, I'm so stupid......||||

0! = 1 ...>"<