Eroare de compilare: user.cpp: In function ‘void backtrack()’: user.cpp:12:19: error: ‘s’ was not declared in this scope for (int i=1; i<=s[0]; i++) ^ user.cpp:14:9: error: ‘s’ was not declared in this scope if (s[0]) ^ user.cpp:16:16: error: ‘s’ was not declared in this scope for (int i=s[s[0]]+1; i<=n; i++) ^ user.cpp:19:15: error: ‘backt’ was not declared in this scope backt(); ^