Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:15: warning: suggest parentheses around assignment used as truth value user.cpp: In function ‘void buildtree(int, int, int, int, int)’: user.cpp:44: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘void update(int, int, int, int, int, int)’: user.cpp:55: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘int query(int, int, int, int, int, int)’: user.cpp:67: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘int main()’: user.cpp:73: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:74: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:76: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:78: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:80: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:89: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:91: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result