Compilare: user.cpp: In function ‘int calculate(std::vector<int>, std::vector<int>)’: user.cpp:14:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v1.size(); i++) { ^ user.cpp:20:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v2.size(); i++) { ^ user.cpp:33:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < v1.size() - 1 && v1[i] > v1[i + 1]) { ^ user.cpp:41:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < v2.size() - 1 && v2[i] < v2[i + 1]) { ^ user.cpp:47:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v1.size(); i++) { ^ user.cpp:51:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v2.size(); i++) { ^ user.cpp:12:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, count = 0; ^