Compilare: main.cpp:37:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 37 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:63:29: warning: 'h' may be used uninitialized [-Wmaybe-uninitialized] 63 | cout<<sol<<' '<<g<<' '<<h; | ^ main.cpp:50:22: note: 'h' was declared here 50 | int x=0,sol=-1,g,h,inv=(1<<21)-1; | ^ main.cpp:63:24: warning: 'g' may be used uninitialized [-Wmaybe-uninitialized] 63 | cout<<sol<<' '<<g<<' '<<h; | ^~~ main.cpp:50:20: note: 'g' was declared here 50 | int x=0,sol=-1,g,h,inv=(1<<21)-1; | ^