#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;
}
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