cristal.cpp: In function 'void dfs(int)': cristal.cpp:14: error: expected initializer before ':' token cristal.cpp:19: error: expected primary-expression before '}' token cristal.cpp:19: error: expected ';' before '}' token cristal.cpp:19: error: expected primary-expression before '}' token cristal.cpp:19: error: expected ')' before '}' token cristal.cpp:19: error: expected primary-expression before '}' token cristal.cpp:19: error: expected ';' before '}' token cristal.cpp: In function 'int main()': cristal.cpp:47: warning: comparison between signed and unsigned integer expressions