Compilare: user.cpp: In function ‘void bfs(Coord, int)’: user.cpp:40:32: warning: narrowing conversion of ‘(((int)nod.Coord::x) + dx[dir])’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Coord adj = {nod.x + dx[dir], nod.y + dy[dir]}; ^ user.cpp:40:49: warning: narrowing conversion of ‘(((int)nod.Coord::y) + dy[dir])’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Coord adj = {nod.x + dx[dir], nod.y + dy[dir]}; ^ user.cpp: In function ‘int main()’: user.cpp:60:9: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(a[i] + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:60:9: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(a[i] + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:60:22: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(a[i] + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:65:19: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] S = {i, j}; ^ user.cpp:65:19: warning: narrowing conversion of ‘j’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:67:19: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] F = {i, j}; ^ user.cpp:67:19: warning: narrowing conversion of ‘j’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:69:19: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] D = {i, j}; ^ user.cpp:69:19: warning: narrowing conversion of ‘j’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:56:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^