Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:32:12: warning: unused variable ‘A’ [-Wunused-variable] size_t A = 1; ^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp:49:31: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[x][j] = d[y][j+1]; ~~~~~~~~^ user.cpp: In function ‘int main()’: user.cpp:85:19: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << d[z][1]; ^