Compilare: main.cpp: In function 'int main()': main.cpp:13:45: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aiacuhexagoane.in", "r", stdin); ^ main.cpp:14:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aiacuhexagoane.out", "w", stdout); ^ main.cpp:16:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld", &N, &M, &Q); ^ main.cpp:19:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ main.cpp:27:19: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized] int b = b % (2 * M - 1); ~~^~~~~~~~~~~~~