Compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:37:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<layer[i].size(); ++j) ^ user.cpp:40:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<T[x].size(); ++k) ^ user.cpp: In function ‘void decompose()’: user.cpp:80:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<layer[i].size(); ++j) ^ user.cpp:85:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<T[x].size(); ++k) ^ user.cpp:87:37: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (T[x][k] != f[x] && which == 0 || value[which] < value[T[x][k]]) ^ user.cpp:112:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j < layer[i].size(); ++j) ^ user.cpp: In function ‘int main()’: user.cpp:163:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<c.length(); ++i) ^