Main.cc: In function ‘int main()’: Main.cc:59:40: error: expected primary-expression before ‘]’ token for(int i=pos;ring[(pos+1)%]) ^ Main.cc:59:41: error: expected ‘;’ before ‘)’ token for(int i=pos;ring[(pos+1)%]) ^ Main.cc:60:9: error: expected primary-expression before ‘}’ token } ^ Main.cc:59:21: warning: unused variable ‘i’ [-Wunused-variable] for(int i=pos;ring[(pos+1)%]) ^ Main.cc:52:16: warning: unused variable ‘tmp’ [-Wunused-variable] ll tmp=0; ^~~ Main.cc:53:16: warning: unused variable ‘ans’ [-Wunused-variable] ll ans=0; ^~~