Compilare: user.cpp: In function ‘int bun(std::pair<long long int, long long int>, std::pair<long long int, long long int>, std::pair<long long int, long long int>, std::pair<long long int, long long int>)’: user.cpp:29:9: warning: unused variable ‘total’ [-Wunused-variable] int total = 0; ^ user.cpp: In function ‘int main()’: user.cpp:43:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrulatere.in","r",stdin); ^ user.cpp:44:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrulatere.out","w",stdout); ^ user.cpp:46:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:48:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld\n",&P[i].x,&P[i].y); ^