#include <stdio.h>

int main(void) {
    double t1, v1; 
    double t2, v2;
    double t3, v3;

    if(scanf("%lf,%lf", &t1, &v1)!=2)return 0;
    if(scanf("%lf,%lf", &t2, &v2)!=2)return 0;

    while(scanf("%lf,%lf",&t3,&v3)==2){

        if(v2>v1&&v2>v3){
            printf("Peak:time=%.3f,voltage=%.3f\n",t2,v2);
        }

        t1 = t2; v1 = v2;
        t2 = t3; v2 = v3;
    }

    return 0;
}