HDU 1036 Average is not Fast Enough! 模拟

题意：接力赛，有$n$段，总路程$d$,求每个队伍的平均速度。

思路：模拟。

坑点：浮点数误差，所以处理时间的时候用整数，尽量避免浮点数。

http://acm.hdu.edu.cn/showproblem.php?pid=1036

/*********************************************
    Problem : HDU 1036
    Author  : NMfloat
    InkTime (c) NM . All Rights Reserved .
********************************************/

#include <map>
#include <set>
#include <queue>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <iostream>
#include <algorithm>

#define rep(i,a,b)  for(int i = a ; i <= b ; i ++)
#define rrep(i,a,b) for(int i = b ; i >= a ; i --)
#define repE(p,u) for(Edge * p = G[u].first ; p ; p = p -> next)
#define cls(a,x)   memset(a,x,sizeof(a))
#define eps 1e-8

using namespace std;

const int MOD = 1e9+7;
const int INF = 0x3f3f3f3f;
const int MAXN = 1e5+5;
const int MAXE = 2e5+5;

typedef long long LL;
typedef unsigned long long ULL;

int T,n,m,k;

void input() {
    double d;
    int t,m,s,ok,num;
    char s1[10];
    int v;
    int Int,Dot;
    double dot;
    int sec;

    scanf("%d %lf",&n,&d);
    d = d ;
    while(~scanf("%d",&num)) {
        ok = 0;
        sec = 0;
        rep(i,1,n) {
            scanf("%s",s1);
            if(strcmp(s1,"-:--:--") == 0) ok = 1; 
            else {
                sscanf(s1,"%d:%d:%d",&t,&m,&s);
                sec += t * 3600 + m * 60 + s;
            }
        }
        if(ok) printf("%3d: -\n",num);
        else {
            v = floor(sec / d + 0.5); // s / d;
            Int = v / 60;
            Dot = v % 60;
            printf("%3d: %d:%02d min/km\n",num,Int,Dot);
        }

    }
}

void solve() {

}

int main(void) {
    //freopen("a.in","r",stdin);
    //scanf("%d",&T); while(T--) {
    //while(~scanf("%d %d",&n,&m)) {
    //while(scanf("%d",&n),n) {
        input();
        solve();
    //}
    return 0;
}