Compilare: user.cpp: In function ‘int binarySearch(int, int)’: user.cpp:51:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + step < v2.size () && (v2 [i + step].a < a || (v2 [i + step].a == a && v2 [i + step].t < t))) ^ user.cpp: In function ‘int main()’: user.cpp:81:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < v.size (); ++ i) ^ user.cpp:91:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v2.size () - 1; ++ i) { ^ user.cpp:114:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < v2.size (); ++ i) ^ user.cpp:57:51: warning: unused variable ‘num’ [-Wunused-variable] int n, m, k, i, a, tdec, b, tater, p, k1, k2, num = 0; ^