0_0_39158260_18879.cpp: In function 'void work()':
0_0_39158260_18879.cpp:74:45: error: expected ';' before 'if'
74 | scanf("%s%lld%lld",ch,&l,&r)
| ^
| ;
75 | if(ch[0]=='U'){
| ~~
0_0_39158260_18879.cpp:77:18: error: 'else' without a previous 'if'
77 | }else{
| ^~~~
|