Eroare de compilare: user.cpp:9:15: error: ‘int div [1000005]’ redeclared as different kind of symbol int div[MAXVAL]; ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:785:14: error: previous declaration of ‘div_t div(int, int)’ extern div_t div (int __numer, int __denom) ^ user.cpp: In function ‘int main()’: user.cpp:21:10: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript div[j]++; ^ user.cpp:24:18: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if(x > 1) div[x]++; ^ user.cpp:28:29: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript sol += 1LL * i * i * div[i] * (div[i] - 1) / 2; ^ user.cpp:28:39: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript sol += 1LL * i * i * div[i] * (div[i] - 1) / 2; ^ user.cpp:12:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pcost.in", "r", stdin); ^ user.cpp:13:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pcost.out", "w", stdout); ^ user.cpp:16:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:18:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^