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  1. str s,t
  2. int r
  3. s="hello"
  4. t="world"
  5. print s*r+s*t
Runtime error #stdin #stdout #stderr 0.01s 118656KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
  File "prog.py", line 1
    str s,t
       ^
SyntaxError: invalid syntax