hdu 1036 (I/O routines, fgets, sscanf, %02d, rounding, atoi, strtol) 分类： hdoj 2015-06-16 19:37 32人阅读 评论(0) 收藏

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 8
char 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.

版权声明：本文为博主原创文章，未经博主允许不得转载。// p.s. If in any way improment can be achieved, better performance or whatever, it will be well-appreciated to let me know, thanks in advance.