Compilare: main.cpp: In function 'int main()': main.cpp:89:40: warning: narrowing conversion of 'p[i]' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 89 | vals.push_back({i,j,p[i],p[j]}); | ~~~^ main.cpp:89:45: warning: narrowing conversion of 'p[j]' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing] 89 | vals.push_back({i,j,p[i],p[j]}); | ~~~^ main.cpp:91:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(int i=0;i<vals.size();i++) | ~^~~~~~~~~~~~