#include <stdio.h>

int main() {
    double time[100000], v[100000];
    int n = 0;

    while (scanf("%lf,%lf", &time[n], &v[n]) == 2) {
        n++;
    }

    for (int i = 1; i < n - 1; i++) {
        if (v[i] > v[i - 1] && v[i] > v[i + 1] && v[i] > 3.4) {
            
            printf("%.2f\n", v[i]);
        }
    }

    return 0;
}