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>
#include<vector>
using namespace std;

#define MAX 1000000

int main()
{
	int i, j, k;
	vector< vector<int> > distance(8, vector<int>(8));
	vector< vector<int> > fee(8, vector<int>(8));
	fee[1][2] = 200;
	fee[1][3] = 500;
	fee[1][4] = 600;
	fee[1][5] = 700;
	fee[1][6] = 1350;
	fee[1][7] = 1650;
	fee[2][3] = 350;
	fee[2][4] = 450;
	fee[2][5] = 600;
	fee[2][6] = 1150;
	fee[2][7] = 1500;
	fee[3][4] = 250;
	fee[3][5] = 400;
	fee[3][6] = 1000;
	fee[3][7] = 1350;
	fee[4][5] = 250;
	fee[4][6] = 850;
	fee[4][7] = 1300;
	fee[5][6] = 600;
	fee[5][7] = 1150;
	fee[6][7] = 500;
	distance[1][2] = 6;
	distance[1][3] = 13;
	distance[1][4] = 18;
	distance[1][5] = 23;
	distance[1][6] = 42;
	distance[1][7] = 58;
	distance[2][3] = 7;
	distance[2][4] = 12;
	distance[2][5] = 17;
	distance[2][6] = 37;
	distance[2][7] = 52;
	distance[3][4] = 5;
	distance[3][5] = 10;
	distance[3][6] = 30;
	distance[3][7] = 40;
	distance[4][5] = 5;
	distance[4][6] = 25;
	distance[4][7] = 40;
	distance[5][6] = 20;
	distance[5][7] = 35;
	distance[6][7] = 15;

	int s, e, h, m;
	int timeStart = 17*60+30;
	int timeEnd = 19*60+30;
	int r;
	bool f;
	while (cin>>s, s) {
		f = false;
		cin>>h>>m;
		if (timeStart <= h*60+m && h*60+m <= timeEnd) f = true;
		cin>>e>>h>>m;
		if (timeStart <= h*60+m && h*60+m <= timeEnd) f = true;

		if (s>e) {
			s ^= e;
			e ^= s;
			s ^= e;
		}
		r = fee[s][e];
		if (f && distance[s][e]<=40) {
			r /= 2;
			if (r%50) {
				r += 25;
				r /= 50;
				r *= 50;
			}
		}
		cout<<r<<endl;
	}
	return 0;
}

C++: #include<iostream>
#include<cmath>
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 == 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 == 4) return 250;
		if(out == 5) return 400;
		if(out == 6) return 1000;
		if(out == 7) return 1350;
	} else if(in == 4){
		if(out == 5) return 250;
		if(out == 6) return 850;
		if(out == 7) return 1300;
	} else if(in == 5){
		if(out == 6) return 600;
		if(out == 7) return 1150;
	} else if(in == 6){
		if(out == 7) return 500;
	} else{
		cout <<"error!";
	}
}

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 == 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 == 4) return 5;
		if(out == 5) return 10;
		if(out == 6) return 30;
		if(out == 7) return 45;
	} else if(in == 4){
		if(out == 5) return 5;
		if(out == 6) return 25;
		if(out == 7) return 40;
	} else if(in == 5){
		if(out == 6) return 20;
		if(out == 7) return 35;
	} else if(in == 6){
		if(out == 7) return 15;
	} else{
		cout <<"error!";
	}
}

int checkhalf(int ih, int im, int oh, int om, int dis){
	int flag1 = 0, flag2 = 0;
	if(dis > 40) return 0;
	
	if(ih < 17 || (ih == 17 && im <= 30)){
		if(oh - 17 > 0 || (oh == 17 && om >= 30)){
			flag1 = 1;
		}
	}
	
	if(ih < 19 || (ih == 19 && im <= 30)){
		if(oh - 19 > 0 || (oh == 19 && om >= 30)){
			flag2 = 1;
		}
	}
	
	if((flag1 && flag2) || (!flag1 && !flag2)) return 0;
	else if((flag1 && !flag2) || (!flag1 && flag2)) 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>
#include<cstdio>
#include<algorithm>
#define NN 1000
using namespace std;

int main(){
  int aa[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 bb[7][7]={ {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}};

  int i,j,n,time00,time01,time10,time11,n2,disc,mo;
  int disc2;
  while(1){
    disc2=0;
    disc=0; //flag
    cin >> n;
    if(n == 0)break;
    cin >> time00 >> time01;
    cin >> n2;
    cin >> time10 >> time11;

   
      if(time10 == 19 && time11 <= 30){disc2=1;}
      else if(time10 == 18)disc2=1;
      else if(time10 == 17 && time11>=30)disc2=1;
      if(bb[n2-1][n-1]<=40 && disc2==1)disc=1; //ツ湘ーツ個渉づーツ鳴楪つスツつオツづつ「ツづェツづ仕iscountツフツδ可グON
   

    mo=aa[n-1][n2-1];
    if(disc == 1){
      mo=mo/2;
      disc=0;
      disc2=0;
       if(mo%50 !=0)mo=(mo-(mo%50))+50;
    }
    cout << mo << endl;


    }


}

C++: #include <iostream>
#include <stdio.h>
using namespace std;
int main() {
 char c1[2],c2[2];
 int h,m,ic[2],f[2],i,k,a,b;
 int g[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}};
 while(true) {
	 for (i=0;i<2;i++) {
		 cin >> ic[i];
		 if (ic[i]==0) return 0;
		 ic[i]--;
		 cin >> c1 >> c2;
		 h=(c1[0]-'0')*10+(c1[1]-'0');
		 m=(c2[0]-'0')*10+(c2[1]-'0');
		 if (h==17 && m==30) f[i]=1; else if (h==19 && m==30) f[i]=3; else
			 if ((h==17 && m>30) || h==18 || (h==19 && m<30)) f[i]=2; else f[i]=0; 
		 }
	 k=g[ic[0]][ic[1]]; a=f[0]; b=f[1];
	 if(k<1350) 
		 if((a==1 && b==3)||(a==3 && b==1)||(a==0 && b==1)||(a==1 && b==2)||(a==0 && b==2)||(a==2 && b==3)||(a==2 && b==0)||(a==3 && b==0)) k=k % 100>0 ? k/2+25:k/2;
	 cout << k << endl;
 }
return 0;
 }