View Compilation Error

0_0_18730862_17342.cpp: In function 'int main()':
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input
                         append(st[vid], '2');
                                             ^
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input
0_0_18730862_17342.cpp:72:45: error: expected '}' at end of input