Compilare: user.cpp: In function ‘int main()’: user.cpp:5:117: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] int main() {int t;f >> t;while (t--) {{int n,x,y,s,m=0;f >> n >> x >> y;for (int i = 1; i <= n; i++) {f >> m; s ^= m;for (int j = 1; j <= m; j++) f >> x >> y;}g << (s > 0) << '\n';}}return 0; ^