//kadai09b.c 26HG301003B Eriguchi Sota
#include<stdio.h>
int min3(double a,double b,double c)
{
    double min=a;
    if(b<min) min=b;
    if(c<min) min=c;
    return min;
}
int main(void)
{
    double a,b,c;
    printf("実数aを入力\n");
    scanf("%lf",&a);
    printf("実数bを入力\n");
    scanf("%lf",&b);
    printf("実数cを入力\n");
    scanf("%lf",&c);
    printf("最小値は%fです\n",min3(a,b,c));
    return 0;
}