nr2.cpp: In function 'void dfs(int)': nr2.cpp:19: warning: 'auto' will change meaning in C++0x; please remove it nr2.cpp:19: error: expected initializer before ':' token nr2.cpp:25: warning: suggest parentheses around assignment used as truth value nr2.cpp:26: error: expected primary-expression before '}' token nr2.cpp:26: error: expected ')' before '}' token nr2.cpp:26: error: expected primary-expression before '}' token nr2.cpp:26: error: expected ';' before '}' token nr2.cpp: In function 'int main()': nr2.cpp:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result nr2.cpp:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result nr2.cpp:49: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result nr2.cpp:52: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result nr2.cpp:58: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result nr2.cpp:60: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result nr2.cpp:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result nr2.cpp:76: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result