Compilare: main.cpp: In function 'void det()': main.cpp:53:9: warning: variable 'ans_part' set but not used [-Wunused-but-set-variable] int ans_part; ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mexitate.in","r",stdin); ^ main.cpp:73:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mexitate.out","w",stdout); ^