Compilare: user.cpp: In function ‘void update(int, long long int)’: user.cpp:25: warning: suggest parentheses around arithmetic in operand of ‘^’ user.cpp: In function ‘long long int query(int)’: user.cpp:32: warning: suggest parentheses around arithmetic in operand of ‘^’ user.cpp: In function ‘void update2(int, long long int)’: user.cpp:39: warning: suggest parentheses around arithmetic in operand of ‘^’ user.cpp: In function ‘long long int query2(int)’: user.cpp:46: warning: suggest parentheses around arithmetic in operand of ‘^’ user.cpp: In function ‘int main()’: user.cpp:132: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:133: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:135: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:138: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:154: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result