#include <stdio.h>

int main() {
    double t, v;
    double max = -1e9;
    double peak_time = 0;

    while (scanf("%lf %lf", &t, &v) != EOF) {
        if (v > max) {
            max = v;
            peak_time = t;
        }
    }

    printf("ピーク電圧 = %f V\n", max);
    printf("ピーク時刻 = %f 秒\n", peak_time);

    return 0;
}