zagrade.cpp:44:11: warning: multi-character character constant [-Wmultichar]
44 | cout<<'? '<<l<<" "<<r<<endl;
| ^~~~
zagrade.cpp:32:40: warning: bad option '-funroll-lopps' to pragma 'optimize' [-Wpragmas]
32 | #pragma GCC optimize ("03,unroll-lopps")
| ^
zagrade.cpp:38:23: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
38 | void setIO(string name){
| ^
zagrade.cpp:43:20: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
43 | int ask(int l,int r){
| ^
zagrade.cpp:48:14: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
48 | int32_t main(){
| ^
zagrade.cpp: In function 'void setIO(std::string)':
zagrade.cpp:40:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
40 | freopen((name+".in").c_str(),"r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
zagrade.cpp:41:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
41 | freopen((name+".out").c_str(),"w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~