Compilare: user.cpp: In function ‘int main()’: user.cpp:95:56: warning: value computed is not used [-Wunused-value] dr_apa[i+dx[k]][j+dy[k]]>max(f[i][j]+1,f[i+dx[k]][j+dy[k]]); ^ user.cpp:87:23: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(mark[i+dx[k]][j+dy[k]]==2) ^ user.cpp:23:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("delfin.in","r",stdin); ^ user.cpp:24:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("delfin.out","w",stdout); ^ user.cpp:25:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&m); ^ user.cpp:44:19: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] mark[x1][y1]=1; ^ user.cpp:44:19: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:58:16: warning: ‘y3’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(f[x3][y3]) ^ user.cpp:45:19: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] mark[x2][y2]=2; ^ user.cpp:45:19: warning: ‘y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:58:16: warning: ‘x3’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(f[x3][y3]) ^