pioni.cpp: In function 'void dfs(int)': pioni.cpp:22: error: expected initializer before ':' token pioni.cpp:80: error: expected primary-expression at end of input pioni.cpp:80: error: expected ';' at end of input pioni.cpp:80: error: expected primary-expression at end of input pioni.cpp:80: error: expected ')' at end of input pioni.cpp:80: error: expected statement at end of input pioni.cpp:80: error: expected '}' at end of input