Compilare: main.cpp: In function 'int solve(std::stringstream&)': main.cpp:78:1: warning: no return statement in function returning non-void [-Wreturn-type] 78 | } | ^ main.cpp: In function 'int main()': main.cpp:93:3: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized] 93 | for (int u; u <= m; u++) { | ^~~