<filename>ABC/abc001-abc050/abc029/a.py
# -*- coding: utf-8 -*-
# AtCoder Beginner Contest


if __name__ == '__main__':
    w = input()
    print(w + 's')

<filename>ABC/abc001-abc050/abc029/a.py
# -*- coding: utf-8 -*-
# AtCoder Beginner Contest


if __name__ == '__main__':
    w = input()
    print(w + 's')

# -*- coding: utf-8 -*- # AtCoder Beginner Contest