Compilare: user.cpp: In function ‘void update(int, int, int, int&)’: user.cpp:77:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0, j = 0; i < aint[ind<<1].size() || j < aint[(ind<<1)+1].size(); ) { ^ user.cpp:77:81: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0, j = 0; i < aint[ind<<1].size() || j < aint[(ind<<1)+1].size(); ) { ^ user.cpp:78:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i >= aint[ind<<1].size()) ^ user.cpp:80:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (j < aint[(ind<<1)+1].size() && aint[(ind<<1)+1][j] < aint[ind<<1][i]) ^ user.cpp: In function ‘void citire()’: user.cpp:21:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:23:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &mat[i].x, &mat[i].y); ^ user.cpp:24:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:26:77: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &drlo[i].x, &drlo[i].y, &drhi[i].x, &drhi[i].y); ^ user.cpp: In function ‘int main()’: user.cpp:118:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zoo.in", "r", stdin); ^ user.cpp:119:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zoo.out", "w", stdout); ^