#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(){
int n;
if(scanf("%d", &n
) != 1) return 0; int c;
while((c
= getchar()) != '\n' && c
!=EOF
); int total_usia = 0;
char buffer[50];
for(int i = 0; i < n; i++){
if(fgets(buffer
, sizeof(buffer
), stdin
) != NULL
){ buffer
[strcspn(buffer
, "\r\n")] = 0; char age_str[3];
age_str[0] = buffer[0];
age_str[1] = buffer[1];
age_str[2] = buffer[2];
int usia
= atoi(age_str
); total_usia += usia;
char *nama = buffer + 2;
}
}
if (n > 0){
double rata_rata = (double)total_usia / n;
}
return 0;
}
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