/in/foo.cc: In function 'int main()':
/in/foo.cc:5:48: error: 'R' was not declared in this scope
  long long a[100010]; int N,Q;scanf("%d%d",&N,&R); a[0]=0; for(int i=1;i<=N;i++){scanf("%lld",&a[i]); a[i]+=a[i-1];}//shu'ru
                                                ^
/in/foo.cc:6:13: error: 'l' was not declared in this scope
  while(Q--){l,r;scanf("%d%d",&l,&r);cout<<a[r]-a[l-1];}//shu'chu
             ^
/in/foo.cc:6:15: error: 'r' was not declared in this scope
  while(Q--){l,r;scanf("%d%d",&l,&r);cout<<a[r]-a[l-1];}//shu'chu
               ^