Compilare: user.cpp: In function ‘void solve2()’: user.cpp:42:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(mancare[i][j] && vaz[i][j]) ^ user.cpp: In function ‘int main()’: user.cpp:64:21: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if((x^k)&((1<<s)-1)==(1<<s)-1) v[i][j]=1; ^ user.cpp:50:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("panda.in", "r", stdin); ^ user.cpp:51:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("panda.out", "w", stdout); ^ user.cpp:53:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&tip,&n,&m,&t); ^ user.cpp:54:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&l,&c,&k,&s); ^ user.cpp:57:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:63:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^