Compilare: main.cpp: In function 'int main()': main.cpp:74:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (i = 0; i < inter.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:75:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for (j = 0; j <= k2 - i and j < d.size(); j++) | ~~^~~~~~~~~~ main.cpp:78:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | if (s - i - j - k < nt.size() and k < fr.size()) | ~~~~~~~~~~~~~~^~~~~~~~~~~ main.cpp:78:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | if (s - i - j - k < nt.size() and k < fr.size()) | ~~^~~~~~~~~~~ main.cpp:72:15: warning: unused variable 'op' [-Wunused-variable] 72 | long long op = 0; | ^~