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 <bits/stdc++.h>

using namespace std;

const int Distance[8][8] = { 
	{ 0, 00, 00, 00, 00, 00, 00, 00 },
	{ 0, 00, 06, 13, 18, 23, 43, 58 }, 
	{ 0, 06, 00, 07, 12, 17, 37, 52 }, 
	{ 0, 13, 07, 00, 05, 10, 30, 45 }, 
	{ 0, 18, 23, 43, 00, 05, 25, 40 }, 
	{ 0, 23, 17, 10, 05, 00, 20, 35 }, 
	{ 0, 43, 37, 30, 25, 20, 00, 15 },
	{ 0, 58, 52, 45, 40, 35, 15, 00 }, 
};

const int Money[8][8] = {
	{ 0,  000, 000,  000,  000,  000,  0000, 0000 },
	{ 0,  000, 300,  500,  600,  700,  1350, 1650 },
	{ 0,  300, 000,  350,  450,  600,  1150, 1500 },
	{ 0,  500, 350,  000,  250,  400,  1000, 1350 },
	{ 0,  600, 450,  250,  000,  250,  850,  1300 },
	{ 0,  700, 600,  400,  250,  000,  600,  1150 },
	{ 0, 1350, 1150, 1000, 850,  600,  000,  500  },
	{ 0, 1650, 1500, 1350, 1300, 1150, 500,  000  },
};

const int TimeMin = 17 * 60 + 30;
const int TimeMax = 19 * 60 + 30;

int main() {
	int d, a, hd, md, ha, ma, timeD, timeA, sum;

	while (cin >> d, d) {
		cin >> hd >> md;
		cin >> a >> ha >> ma;
		sum = Money[d][a];
		timeD = hd * 60 + md;
		timeA = ha * 60 + ma;
		if ( Distance[d][a] <= 40 && (timeD>=TimeMin && timeD<=TimeMax || timeA>=TimeMin && timeA<=TimeMax) ) {
			sum /= 2;
			if (sum % 50 != 0) {
				sum += 50 - sum % 50;
			}
			
		}
		cout << sum << endl;
	}

	return 0;
}

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

int l[7]={0,6,13,18,23,43,58};
int co[7][7]={
	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
};
int main(void){
	int s[2],h[2],m[2];
	int f[2];
	int ans;
	while(1){
		scanf("%d",&s[0]);
		if(s[0]==0)break;
		scanf("%02d%02d",&h[0],&m[0]);
		scanf("%d",&s[1]);
		scanf("%02d%02d",&h[1],&m[1]);
		for(int i=0;i<2;i++){
			if(h[i]<17 || h[i]==17 && m[i]<30)f[i]=0;
			else if(h[i]<19 || h[i]==19 && m[i]<=30)f[i]=1;
			else f[i]=2;
		}
		ans=co[s[0]-1][s[1]-1];
		if((f[0]==1 || f[1]==1) && abs(l[s[1]-1]-l[s[0]-1])<=40)ans=(co[s[0]-1][s[1]-1]+50)/100*50;
		printf("%d\n",ans);
	}
    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(){
	while(1){
		int inic, inh, inm, outic, outh, outm, yen, kyori;
		cin >>inic;
		if(inic == 0) break;
		cin >>inh >>inm >>outic >>outh >>outm;
		
		yen = charge(inic, outic);
		kyori = dist(inic, outic);
		//cout <<"check = " <<checkhalf(inh, inm, outh, outm, kyori) <<endl;
		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){
	if(dis > 40){
		return 0;
	}
	
	if((ih < 17 || (ih == 17 && im <= 30)) && (oh < 19 || (oh == 19 && om < 30))){
		return 1;
	} else if((ih > 17 || (ih == 17 && im > 30)) && (oh > 19 || (oh == 19 && om >= 30))){
		return 1;
	//} else if(ih == oh && im == om){
	//	return 0;
	} else{
		return 0;
	}
}

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 s[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 main(){
  int sc,sh,sm,ec,eh,em; 
  while(cin>>sc&&sc){
    cin>>sh>>sm>>ec>>eh>>em;
    int k=0,an=s[sc-1][ec-1],S=sh*100+sm,E=eh*100+em;
    if(S>E)E+=2400;
    if(S<=1730&&1730<=E)k++;
    if(S<=1930&&1930<=E)k++;
    if(2400+1730<=E)k++;
    if(s[ec-1][sc-1]<=40&&k==1)an/=2;
    if(an%50)an-=an%50,an+=50;
    cout<<an<<endl;
  }
  return 0;
}