Compilare: main.cpp: In function 'int main()': main.cpp:30:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] t = N - (1 + (int) ceil(sqrt(1 + 8 * K)) >> 1); ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:39:19: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=] printf("%d ", num); ^ main.cpp:22:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("farfurii.in", "r", stdin); ^ main.cpp:23:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("farfurii.out", "w", stdout); ^ main.cpp:28:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &N, &K); ^