hdu 1036 (I/O routines, fgets, sscanf, %02d, rounding, atoi, strtol)

thanks to http://stackoverflow.com/questions/2144459/using-scanf-to-accept-user-input and http://stackoverflow.com/questions/456303/how-to-validate-input-using-scanf for the i/o part.
thanks to http://www.haodaima.net/art/137347 for the rounding part. s=s/nkilo+0.5; //s=round(s/nkilo);
check return value of scanf,
std::fgets, http://en.cppreference.com/w/cpp/io/c/fgets
std::atoi, std::atol, std::atoll,
std::strtof, std::strtod, std::strtold,
std::strtol, std::strtoll,
std::strtok, http://en.cppreference.com/w/cpp/string/byte/strtok
std::round, std::lround, std::llround, http://en.cppreference.com/w/cpp/numeric/math/round

#include <cstdio>#include <cmath>#include <algorithm>#define MAXLEN 200#define STEP 8char buffer[MAXLEN];int main() {    //freopen("input.txt","r",stdin);    int nsect, team, h,m,s, ht,mt,st, i, disqualified;    char *p;    double nkilo;    scanf("%d%lf",&nsect,&nkilo);    while(scanf("%d",&team)==1) {        h=m=s=0; disqualified=0;        p=buffer;        fgets(buffer,MAXLEN,stdin);        for(i=0;i<nsect;++i) {            if(sscanf(p,"%d:%d:%d",&ht,&mt,&st)!=3) { disqualified=1; break; }            h+=ht; m+=mt; s+=st; p+=STEP;        }        if(disqualified) { printf("%3d: -\n",team); continue; }        s+=(m*60+h*3600);        s=s/nkilo+0.5; //s=round(s/nkilo);        m=s/60; s=s%60;        printf("%3d: %d:%02d min/km\n",team,m,s);    }    return 0;}

as the problem title of hdu 1036 ( Average is not Fast Enough! )
suggest, Average is not Fast Enough, indeed.