Submission #298007

#	Time	Username	Problem	Language	Result	Execution time	Memory
298007		LifeHappen__	Trol (COCI19_trol)	C++14	50 / 50	1 ms	384 KiB

trol

#include<bits/stdc++.h>

using namespace std;

#define int long long

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r){return l+rng()%(r-l+1);}

#define forinc(a,b,c) for(int a=b, __c=c; a<=__c; ++a)
#define fordec(a,b,c) for(int a=b, __c=c; a>=__c; --a)
#define forv(a,b) for(auto &a:b)

#define ii pair<int,int>
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define all(a) begin(a),end(a)
#define reset(f,x) memset(f,x,sizeof(f))
#define fasty ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)

#define bit(x,i) (x>>(i-1)&1ll)
#define on(x,i) (x|(1ll<<(i-1)))
#define off(x,i) (x&~(1ll<<(i-1)))

const int N=2e5+5;
int l,r;

int32_t main(){
   fasty;

   auto e=[&](int x){return x%9==0 ? 9:x%9;};
   int T; cin>>T; while(T--){
      cin>>l>>r;
      int ans=0;
      while(l%9!=1) ans+=e(l++);
      while(r%9!=0) ans+=e(r--);
      ans+=(r-l+1)/9*45;
      cout<<ans<<'\n';
   }
}

• Subtask 1: 50 / 50