Compilare: main.cpp: In function 'int main()': main.cpp:65:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for (i = 0; i < inter.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:66:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for (j = 0; j <= k2 - i and j < d.size(); j++) | ~~^~~~~~~~~~ main.cpp:67:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (k = k1 - i; k < fr.size() and s - i - j - k >= 0; k++) | ~~^~~~~~~~~~~