Compilare: user.cpp: In function ‘void BFS(std::pair<int, int>)’: user.cpp:25:18: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C) ^ user.cpp:25:34: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C) ^ user.cpp:25:42: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C) ^ user.cpp: In function ‘int main()’: user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("figuri.in", "r", stdin); ^ user.cpp:45:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("figuri.out", "w", stdout); ^ user.cpp:57:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &C, &L, &shapes); ^ user.cpp:61:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d", &x1, &y1, &x2, &y2, &color); ^