Compilare: main.cpp: In function 'int build(int, int, int)': main.cpp:19:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] 19 | int m=(st+dr>>1); | ~~^~~ main.cpp: In function 'int update(int, int, int, int, int, int)': main.cpp:33:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] 33 | int m=(st+dr>>1); | ~~^~~ main.cpp: In function 'void solve()': main.cpp:42:11: warning: unused variable 'w' [-Wunused-variable] 42 | int n,w; | ^ main.cpp: At global scope: main.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 62 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:64:10: warning: variable 'sol' set but not used [-Wunused-but-set-variable] 64 | auto sol=[&](int x) | ^~~