Compilare: user.cpp:2:0: warning: ignoring #pragma optimize [-Wunknown-pragmas] #pragma optimize("O2") ^ user.cpp: In function ‘void read(unsigned int&)’: user.cpp:40:23: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) ^ user.cpp:45:23: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) ^ user.cpp: In function ‘bool BellmanFord(unsigned int)’: user.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= nodes; ++i) ^ user.cpp:90:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= edges; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:173:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i != nodes; write(distance[++i] != oo ? distance[i] : 0)); ^ user.cpp:117:25: warning: unused variable ‘j’ [-Wunused-variable] unsigned int i, j, a, b, c; ^ user.cpp:186:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i != nodes; write(distance[++i] != oo ? distance[i] : 0)); ^ user.cpp: At global scope: user.cpp:55:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void write(unsigned int x) ^ user.cpp:34:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void read(unsigned int &num) ^ user.cpp: In function ‘void read(unsigned int&)’: user.cpp:42:24: 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:49:24: 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:110:39: 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); ^ user.cpp:111:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out", "w", stdout); ^