#include <stdio.h>
#include <stdlib.h>
 
int main(void){
    double time[160], voltage[160];
    int i;
 
    for(i = 0; i < 160; i++){
        scanf("%lf,%lf", &time[i], &voltage[i]);
    }
 
    printf("ピーク検出（時間 [s], 電圧 [V]）:\n");
 
    for(i = 1; i < 159; i++) {
        if (voltage[i] > voltage[i-1] && voltage[i] > voltage[i+1]) {
            printf("%.6f, %.6f\n", time[i], voltage[i]);
        }
    }
 
    return 0;
}
 

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