/*
    ・・・Q・・・・・・・・・・・Z・p・ﾒ・・・ｱ    ・ｽ・ｬ11・N・x・E・t・・・E・ﾟ・・ ・・7
                                BohYoh Shibata PREPARATION
*/

#include <math.h>
#include <string.h>
#define MAX_DIST 100

typedef struct { char *name; int dist; int rank; } STATION;
typedef struct { int dist; int cost; } FARE;

static FARE dist_fare[] = {{0, 100}, {5, 50}, {20, 40},
                           {40, 30}, {70, 20}, {MAX_DIST, 10}};
static double weight[] = {1.0, 1.1, 1.2, 1.5, 2.0};

int CalculateFare(char *from, char *to, STATION line[])
{
    int dif, distx, farex, i;
    double distf;

    i = 0;
    while(strcmp(from, line[i].name) != 0)
        i++;
    distf = line[i].dist * weight[line[i].rank];
    i++;
    while(strcmp(to, line[i].name) != 0){
        distf += line[i].dist * weight[line[i].rank];
        i++;
    }
    distx = ceil(distf);

    farex = dist_fare[0].cost;
    for(i = 1; distx > dist_fare[i - 1].dist; i++) {
        if(distx <= dist_fare[i].dist)
            dif = distx;
        else
            dif = dist_fare[i].dist;
        farex += (dif - dist_fare[i - 1].dist) * dist_fare[i].cost;
    }

    return farex;
}

/*------------------------------------------------------------------------------
    ・e・X・g・v・・・O・・・€
                                Copyright by BohYoh Shibata
------------------------------------------------------------------------------*/

#include  <stdio.h>

static STATION linea[] = {{"a", 5, 0}, {"b", 6, 2}, {"c", 11, 1},
                          {"d", 8, 4}, {"e", 7, 3}, {"f",  0, 0}};

int main(void)
{
    int fare;
    fare = CalculateFare("a", "f", linea);
    printf("a・w・ｩ・・f・w・ﾜ・ﾅ・ﾌ・^・ﾀ・ﾍ%d・~・ﾅ・ｷ・B\n", fare);

    return (0);
}