Compilare: user.cpp: In function ‘void read(int&)’: user.cpp:11:23: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) ~~~~~~~~~~~~^~~~~~ user.cpp:16:23: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) ~~~~~~~~~~~~^~~~~~ user.cpp: In function ‘int main()’: user.cpp:156:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp: At global scope: user.cpp:26:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void write(unsigned int x) ^~~~~ user.cpp:5:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void read(int &num) ^~~~ user.cpp: In function ‘void read(int&)’: user.cpp:13:24: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x30D40 || (fread(inBuffer, 0x1, 0x30D40, stdin), p = 0x0); ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:20:24: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x30D40 || (fread(inBuffer, 0x1, 0x30D40, stdin), p = 0x0); ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:135:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in","r",stdin); ^