#include <stdio.h>
#include <string.h>

#ifndef __STRUCT_CITY
#define __STRUCT_CITY

#define COUNT 11
#define LEN 64

typedef struct city
{
    char name[LEN];
    int population; 
} CITY;

#endif


/* 以下を完成させよ */
void sort_n(CITY cdata[])
{
    int i, j;
    CITY tmp;

}