Compilare: main.cpp: In function 'int nextInt()': main.cpp:18:50: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread (buff , 1 , SZ , stdin) , P = 0; ^ main.cpp:25:50: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread (buff , 1 , SZ , stdin) , P = 0; ^ main.cpp: In function 'int main()': main.cpp:30:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("berarii2.in" , "r" , stdin); ^ main.cpp:31:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("berarii2.out" , "w" , stdout); ^ main.cpp:33:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d" , &n , &m , &p); ^