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#!/usr/bin/env python

# SPDX-FileCopyrightText: Chris Pressey, the original author of this work, has dedicated it to the public domain.
# For more information, please refer to <https://unlicense.org/>
# SPDX-License-Identifier: Unlicense

# a little experiment; try it with redirected input, and without

import sys

print sys.stdin.tell()
line = sys.stdin.readline()
print line
print sys.stdin.tell()
sys.stdin.seek(0, 0)
line = sys.stdin.readline()
print line
print sys.stdin.tell()