import ys, os, datetime, openpyxl
import linecache

def main():
  
data = sys.stdin.readlines()


  


#import sys
#for line in sys.stdin:
 #   print line,
 #   argv = sys.argv


fa8b87641b3c9fe739355ee4ab4ea7d293afe236
import ys, os, datetime, openpyxl
import linecache

def main():
  
data = sys.stdin.readlines()


  


#import sys
#for line in sys.stdin:
 #   print line,
 #   argv = sys.argv

