#!/usr/bin/env python3

import sys

def minimum(a):
    l = len(a)

    if l == 0:
        return None

    m = a[0]
    for i in range(1, l):
        if a[i] < m:
            m = a[i]

    return m

if __name__ == "__main__":
    A = []
    for line in sys.stdin:
        A.append(int(line))

print(minimum(A))