Compilare: main.cpp: In function 'int main()': main.cpp:45:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i=0; i<v[val].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:23:15: warning: iteration 9 invokes undefined behavior [-Waggressive-loop-optimizations] 23 | p37[i]=37*p37[i-1]%mod; | ~~~~~~^~~~~~~~~~~~~~~~ main.cpp:22:20: note: within this loop 22 | for (int i=1; i<=10; i++) | ~^~~~