#include<stdio.h>
#include<stdlib.h>
int main(void) {
int num, occ, arr, sum = 0, avr;
FILE *fp;
fp = fopen("data.txt", "r");
while (fscanf(fp, "%d\t%d\t%d", &num, &occ, &arr) != EOF) {
sum += arr;
}
fclose(fp);
avr = sum / 100;
fp = fopen("data1.txt", "w");
fprintf(fp, "%d\n", avr);
fclose(fp);
return 0;
}