zoj 2185 Count on Canton

这是一道数学题，仔细观察有规律

 

#include < stdio.h > #include < stdlib.h > #include < math.h > int  main() ... {    long n;    int i;    while(scanf("%ld",&n)!=EOF)    ...{           long m = (long)sqrt(2 * n);           while(m*(m +1)/2 < n)           ...{                  m ++;                      }            m --;           i = m * (m+1);           if(m % 2)           printf("TERM %d IS %d/%d ",                   n,n - i/2,m + 2 - (n - i/2) );                                     else printf("TERM %d IS %d/%d ",                    n,m + 2 - (n - i/2),n - i/2);                       }    system("pause");    return 0;}