oj.uz

답안 #209325

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
209325 2020-03-13T19:59:37 Z papa Trol (COCI19_trol) C++14
20 / 50
 5 ms 376 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int q;
ll l,r;

//caka je u tome sto je taj niz periodican
//jer suma cifara daje isti ostatak kao i sam taj broj
//pa ce onda redom da budu 1,2,3,4,5,6,7,8,9,1...
//pronadjemo granice i onda samo vidimo koliko se takvih intervala pojavljuje

int main()
{
   ios_base::sync_with_stdio(false);
   cin.tie(0);
   cout.tie(0);
   cerr.tie(0);

   cin >> q;

   while(q--)
   {
       cin >> l >> r;
       ll sol = 0;
       if(r-l<=20)
       {
            for(ll i=l;i<=r;i++)
               sol = sol + (i%9==0) ? 9 : i%9;
            cout << sol << "\n";
       }
       else
       {
             while(1)
             {
               if((l%9)==1) break;
               else
               {
                   sol+=((l%9)==0) ? 9 : (l%9);
                   l++;
               }
             }
             while(1)
             {
               if((r%9)==0) break;
               else
               {
                   sol+=(r%9);
                   r--;
               }
             }

             ll cnt = r-l+1;
             sol+=cnt*5;
             cout << sol << "\n";
         }
   }

   return 0;
}

Subtask #1
20.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Incorrect 5 ms 376 KB Output isn't correct
3 Incorrect 5 ms 376 KB Output isn't correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct