#include <stdio.h>
#include <math.h>
#include <string.h>
typedef struct preson
{
char name[20];
int a;
}Person;
int main(void){
int n;
int m;
int y=0;
int g;
scanf("%d %d", &n, &m);
Person arr[n];
int f=0;
for(f=0; f<n; f++)
{
scanf("%s %d", arr[f].name, &arr[f].a);
}
for(int u=0; u<n-1; u++) //바퀴 반복
{
for(int j=0; j<n-1-u; j++) //비교활동 반복
{
if(arr[j].a < arr[j+1].a)
{
char t[20]; // 임시 저장
strcpy(t, arr[j].name);
strcpy(arr[j].name, arr[j+1].name);
strcpy(arr[j+1].name, t);
int g; // 임시 저장
g = arr[j].a;
arr[j].a = arr[j+1].a;
arr[j+1].a = g;
}
}
}
for(f=0; f<m; f++)
{
printf("%s\n", arr[f].name);
}
}
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