Compilare: user.cpp: In function ‘int binarySearch1(int, Point)’: user.cpp:67:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + step < fasii [k].size () && ccw (fasii [k][i + step].A, fasii [k][i + step].B, C) < 0) ^ user.cpp: In function ‘int main()’: user.cpp:154:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k1 < fasii [k].size ()) { ^ user.cpp:88:15: warning: unused variable ‘xc’ [-Wunused-variable] int n, i, xc, yc, x, y, m, l, j, med, ans = 0, num, k, k1, cp; ^ user.cpp:88:19: warning: unused variable ‘yc’ [-Wunused-variable] int n, i, xc, yc, x, y, m, l, j, med, ans = 0, num, k, k1, cp; ^ user.cpp:88:38: warning: unused variable ‘med’ [-Wunused-variable] int n, i, xc, yc, x, y, m, l, j, med, ans = 0, num, k, k1, cp; ^ user.cpp:92:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("poligon.in", "r", stdin); ^ user.cpp:93:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("poligon.out", "w", stdout); ^ user.cpp:95:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &n, &m); ^ user.cpp:97:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &x, &y); ^ user.cpp:148:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &x, &y); ^