'''
这个是 python脚本, 直接运行,给一个文件参数即可
eg: python test.py test.txt
'''
#!/usr/bin/python2.7
import sys
def main():
args = sys.argv
fp = open(args[1],"r")
temlist = fp.readline().split()
for line in fp.readlines():
llist = line.split()
if llist[1] == temlist[2]:
sys.stdout.write('%s\n' %(' '.join(temlist)))
sys.stdout.write('%s\n\n' %(' '.join(llist)))
temlist = llist
fp.close()
if __name__ == '__main__':
main()