Compilare: main.cpp: In function 'int main()': main.cpp:32:16: warning: value computed is not used [-Wunused-value] 32 | p2[i-1]+mod; main.cpp:37:10: warning: value computed is not used [-Wunused-value] 37 | p2[n]+mod; main.cpp:58:22: 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] 58 | for(int j=0;j<v2.size();j++) | ~^~~~~~~~~~ main.cpp:11:11: warning: unused variable 'cnt' [-Wunused-variable] 11 | int n,cnt=0,mod=1e9+7; | ^~~