Compilare: main.cpp: In function 'int main()': main.cpp:15:28: warning: format '%lf' expects argument of type 'double', but argument 2 has type 'long double' [-Wformat=] printf("%.7lf", sol); ^ main.cpp:9:17: warning: unused variable 'sol' [-Wunused-variable] long double sol; ^~~ main.cpp:6:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("noroc.in", "r", stdin); ^ main.cpp:7:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("noroc.out", "w", stdout); ^ main.cpp:10:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &m); ^