Compilare: user.cpp:2:0: warning: ignoring #pragma optimize [-Wunknown-pragmas] #pragma optimize("Ofast") ^ user.cpp: In function ‘void read(int&)’: user.cpp:80:23: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) ^ user.cpp:87:23: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) ^ user.cpp: At global scope: user.cpp:99:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void itoa(int x) ^ user.cpp:72:37: 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:84:24: 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:91:24: 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:127:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bellmanford.in", "r", stdin); ^ user.cpp:128:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bellmanford.out", "w", stdout); ^ user.cpp: In function ‘void read(int&)’: user.cpp:94:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] sign != 0x2D || (num = -num); ^ user.cpp: In function ‘int main()’: user.cpp:94:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:74:10: note: ‘sign’ was declared here char sign; ^ user.cpp:94:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] sign != 0x2D || (num = -num); ^ user.cpp:74:10: note: ‘sign’ was declared here char sign; ^