Compilare: main.cpp: In function 'int main()': main.cpp:75:19: 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 (i = 0; i < inter.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:76:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for (j = 0; j <= k2 - i and j < d.size(); j++) | ~~^~~~~~~~~~ main.cpp:77:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (k = k1 - i; k < fr.size() and s - i - j - k >= 0 and s - i - j - k < nt.size(); k++) | ~~^~~~~~~~~~~ main.cpp:77:85: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (k = k1 - i; k < fr.size() and s - i - j - k >= 0 and s - i - j - k < nt.size(); k++) | ~~~~~~~~~~~~~~^~~~~~~~~~~