Go: package main

import (
	"bufio"
	"os"
	"strconv"
	"strings"
	"fmt"
)

var scanner = bufio.NewScanner(os.Stdin)

func main() {
	distance_table := [][]int{
		{0, 6, 13, 18, 23, 43, 58},
		{6, 0, 7, 12, 17, 37, 52},
		{13, 7, 0, 5, 10, 30, 45},
		{18, 12, 5, 0, 5, 25, 40},
		{23, 17, 10, 5, 0, 20, 35},
		{43, 37, 30, 25, 20, 0, 15},
		{58, 52, 45, 40, 35, 15, 0},
	}
	toll_table := [][]int{
		{0, 300, 500, 600, 700, 1350, 1650},
		{300, 0, 350, 450, 600, 1150, 1500},
		{500, 350, 0, 250, 400, 1000, 1350},
		{600, 450, 250, 0, 250, 850, 1300},
		{700, 600, 400, 250, 0, 600, 1150},
		{1350, 1150, 1000, 850, 600, 0, 500},
		{1650, 1500, 1350, 1300, 1150, 500, 0},
	}
	for scanner.Scan() {
		d, _ := strconv.Atoi(scanner.Text())
		if d == 0 {
			break
		}
		d--
		scanner.Scan()
		dbuf := strings.Split(scanner.Text(), " ")
		dh, _ := strconv.Atoi(dbuf[0])
		dm, _ := strconv.Atoi(dbuf[1])
		dtime := 100*dh+dm
		scanner.Scan()
		a, _ := strconv.Atoi(scanner.Text())
		a--
		scanner.Scan()
		abuf := strings.Split(scanner.Text(), " ")
		ah, _ := strconv.Atoi(abuf[0])
		am, _ := strconv.Atoi(abuf[1])
		atime := 100*ah+am
		toll := toll_table[d][a]
		if distance_table[d][a] <= 40 &&
			1730 <= dtime && dtime <= 1930 ||
			1730 <= atime && atime <= 1930 {
				toll = ((toll/2-1)/50+1)*50
		}
		fmt.Println(toll)
	}
}

C++: #include<iostream>
using namespace std;
int main(){
long p[8][8]={{0,300,500,600,700,1350,1650},
{6,0,350,450,600,1150,1500},
{13,7,0,250,400,1000,1350},
{18,12,5,0,250,850,1300},
{23,17,10,5,0,600,1150},
{43,37,30,25,20,0,500},
{58,52,45,40,35,15,0}};
long s,e,hs,ms,he,me,a,b,c;
while(cin>>s){
if(s==0)break;
cin>>hs>>ms>>e>>he>>me;
if(s>e){a=s;s=e;e=a;}
hs*=60;hs+=ms;
he*=60;he+=me;
a=(hs-1050)*(he-1050);
b=(hs-1170)*(he-1170);
if(a<=0){if(b>0)c=1;else c=0;}
else{if(b<=0)c=1;else c=0;}
if(p[e-1][s-1]<=40&&c==1)cout<<(p[s-1][e-1]/50/2+1)*50<<endl;
else cout<<p[s-1][e-1]<<endl;
}
return 0;
}

C++: #include<iostream>
#include<cstdlib>
using namespace std;

int charge(int in, int out);
int dist(int in, int out);
int checkhalf(int ih, int im, int oh, int om, int dis);
int half(int y);

int main(){
	int inic, inh, inm, outic, outh, outm, yen, kyori;
	while(1){
		cin >>inic;
		if(inic == 0) break;
		cin >>inh >>inm >>outic >>outh >>outm;
		
		yen = charge(inic, outic);
		kyori = dist(inic, outic);
		if(checkhalf(inh, inm, outh, outm, kyori)) yen = half(yen);
		
		cout <<yen <<endl;
	}
	return 0;
}

int charge(int in, int out){
	if(in == 1){
		if(out == 2) return 300;
		if(out == 3) return 500;
		if(out == 4) return 600;
		if(out == 5) return 700;
		if(out == 6) return 1350;
		if(out == 7) return 1650;
	} else if(in == 2){
		if(out == 1) return 300;
		if(out == 3) return 350;
		if(out == 4) return 450;
		if(out == 5) return 600;
		if(out == 6) return 1150;
		if(out == 7) return 1500;
	} else if(in == 3){
		if(out == 1) return 500;
		if(out == 2) return 350;
		if(out == 4) return 250;
		if(out == 5) return 400;
		if(out == 6) return 1000;
		if(out == 7) return 1350;
	} else if(in == 4){
		if(out == 1) return 600;
		if(out == 2) return 450;
		if(out == 3) return 250;
		if(out == 5) return 250;
		if(out == 6) return 850;
		if(out == 7) return 1300;
	} else if(in == 5){
		if(out == 1) return 700;
		if(out == 2) return 600;
		if(out == 3) return 400;
		if(out == 4) return 250;
		if(out == 6) return 600;
		if(out == 7) return 1150;
	} else if(in == 6){
		if(out == 1) return 1350;
		if(out == 2) return 1150;
		if(out == 3) return 1000;
		if(out == 4) return 850;
		if(out == 5) return 600;
		if(out == 7) return 500;
	} else if(in == 7){
		if(out == 1) return 1650;
		if(out == 2) return 1500;
		if(out == 3) return 1350;
		if(out == 4) return 1300;
		if(out == 5) return 1150;
		if(out == 6) return 500;
	}
}

int dist(int in, int out){
	if(in == 1){
		if(out == 2) return 6;
		if(out == 3) return 13;
		if(out == 4) return 18;
		if(out == 5) return 23;
		if(out == 6) return 43;
		if(out == 7) return 58;
	} else if(in == 2){
		if(out == 1) return 6;
		if(out == 3) return 7;
		if(out == 4) return 12;
		if(out == 5) return 17;
		if(out == 6) return 37;
		if(out == 7) return 52;
	} else if(in == 3){
		if(out == 1) return 13;
		if(out == 2) return 7;
		if(out == 4) return 5;
		if(out == 5) return 10;
		if(out == 6) return 30;
		if(out == 7) return 45;
	} else if(in == 4){
		if(out == 1) return 18;
		if(out == 2) return 12;
		if(out == 3) return 5;
		if(out == 5) return 5;
		if(out == 6) return 25;
		if(out == 7) return 40;
	} else if(in == 5){
		if(out == 1) return 23;
		if(out == 2) return 17;
		if(out == 3) return 10;
		if(out == 4) return 5;
		if(out == 6) return 20;
		if(out == 7) return 35;
	} else if(in == 6){
		if(out == 1) return 43;
		if(out == 2) return 37;
		if(out == 3) return 30;
		if(out == 4) return 25;
		if(out == 5) return 20;
		if(out == 7) return 15;
	} else if(in == 7){
		if(out == 1) return 58;
		if(out == 2) return 52;
		if(out == 3) return 45;
		if(out == 4) return 40;
		if(out == 5) return 35;
		if(out == 6) return 15;
	}
}

int checkhalf(int ih, int im, int oh, int om, int dis){
	int flag1 = 0, flag2 = 0, flag3 = 0;
	if(dis > 40) return 0;
	
	if(ih < 17 || (ih == 17 && im <= 30)){
		if((oh == 19 && om < 30) || oh < 19){
			flag1 = 1;
		}
	}
	
	if(ih > 17 || (ih == 17 && im > 30)){
		if((oh == 19 && om >= 30) || oh > 19){
			flag2 = 1;
		}
	}
	
	if((ih > 17 || (ih == 17 && im > 30)) && ((oh == 19 && om < 30) || oh < 19)){
		flag3 = 1;
	}
	
	if((flag1 && flag2) || (!flag1 && !flag2) || flag3) return 0;
	else return 1;
}

int half(int y){
	int temp = y;
	
	temp /= 2;
	if(temp % 50 != 0){
		temp = temp + abs((temp % 50) - 50);
	}
	
	return temp;
}

C++: #include <iostream>
using namespace std;

int main(){
  int sic,sh,sm,eic,eh,em,st,et,S,E,flag,ans;
  int d[8][8];
  d[1][2]=d[2][1]=300;
  d[1][3]=d[3][1]=500;
  d[1][4]=d[4][1]=600;
  d[1][5]=d[5][1]=700;
  d[1][6]=d[6][1]=1350;
  d[1][7]=d[7][1]=1650;
  d[2][3]=d[3][2]=350;
  d[2][4]=d[4][2]=450;
  d[2][5]=d[5][2]=600;
  d[2][6]=d[6][2]=1150;
  d[2][7]=d[7][2]=1500;
  d[3][4]=d[4][3]=250;
  d[3][5]=d[5][3]=400;
  d[3][6]=d[6][3]=1000;
  d[3][7]=d[7][3]=1350;
  d[4][5]=d[5][4]=250;
  d[4][6]=d[6][4]=850;
  d[4][7]=d[7][4]=1300;
  d[5][6]=d[6][5]=600;
  d[5][7]=d[7][5]=1150;
  d[6][7]=d[7][6]=500;
  S=17*3600+30*360;
  E=19*3600+30*360;
  while(1){
    cin>>sic>>sh>>sm>>eic>>eh>>em;
    if(!sic) break;
    st=sh*3600+sm*360;
    et=eh*3600+em*360;
    flag=0;
    if((S<=st&&st<=E)||(S<=et&&et<=E)) flag=1;
    ans=d[sic][eic];
    if(flag){
      int cal;
      ans/=2;
      cal=ans%100;
      if(cal%50){
	ans/=100;
	ans*=100;
	if(cal<50) ans+=50;
	else ans+=100;
      }
    }
    cout<<ans<<endl;
  }
  return 0;
}

C++: 
#include<iostream>
using namespace std;

int main()
{
  int list[7][7]={
    {0,300,500,600,700,1350,1650},
    {6,0,350,450,600,1150,1500},
    {13,7,0,250,400,1000,1350},
    {18,12,5,0,250,850,1300},
    {23,17,10,5,0,600,1150},
    {43,37,30,25,20,0,500},
    {58,52,45,40,35,15,0}
  };
  int in,out,h,m,start,end,fee;
  bool half;
  while(cin>>in,in){
    cin>>h>>m;
    start=100*h+m;
    cin>>out>>h>>m;
    end=100*h+m;
    if(in>out)swap(in,out);
    in--;out--;
    if( (1730<=start && start<=1930) || (1730<=end && end<=1930) )half=true;
    else half=false;
    if(list[out][in]>40)half=false;
    fee=list[in][out];
    if(half){
      fee/=2;
      fee+=25;
      fee/=50;
      fee*=50;
    }
    cout<<fee<<endl;
  }
}