Compilare: main.cpp: In function 'void gen_coef()': main.cpp:144:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(ok) ^ main.cpp: In function 'int main()': main.cpp:175:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("indep.in", "r", stdin); ^ main.cpp:176:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("indep.out", "w", stdout); ^ main.cpp:182:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:184:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^