Compilare: main.cpp: In function 'void LI_CHAO::add(int, int, int, linie&)': main.cpp:31:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] 31 | int m=(st+dr>>1); | ~~^~~ main.cpp: In function 'i64 LI_CHAO::query(int, int, int, int)': main.cpp:47:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] 47 | int m=(st+dr>>1); | ~~^~~ main.cpp: At global scope: main.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 67 | main() | ^~~~