Compilare: user.cpp: In function ‘void solve()’: user.cpp:165:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &q, &n); ^ user.cpp:168:70: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &dr[i].x1, &dr[i].x2, &dr[i].y1, &dr[i].y2); ^ user.cpp:172:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &pct[i].x, &pct[i].y); ^ user.cpp: In function ‘int main()’: user.cpp:211:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FILENAME ".in", "r", stdin); ^ user.cpp:212:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FILENAME ".out", "w", stdout); ^