제출 #1172803

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1172803		hewfhlwejfl	Trol (COCI19_trol)	C++20	40 / 50	0 ms	328 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define pll pair<long long, long long>
#define ppl pair<pll, long long>
#define ll long long
#define se second
#define fi first
#define pb push_back
ll T,n,nq,a[1001009],m,p,cyc,cmp,k,b[1001009],bn,r,res,y,vis1[4000009],vis[4000009],x,ma[400009],l;
string s,s1[9],t;
vector<ll>re;
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

	cin>>T;
	while(T--)
    {
        cin>>l>>r;
        if(r-l+1<=20)
        {
            res=0;
            for(int i=l;i<=r;i++)
            {
                res+=i%9;
                if(i%9==0)res+=9;
            }
            cout<<res<<endl;
            continue;
        }
        res=0;
        for(int i=1;i<=r%9;i++)
            res+=i;
        x=(l%9);
        if((!x))x=9;
        for(int i=x;i<=9;i++)
            res+=i;
        r-=r%9;
        l+=9-x+1;
        if(l<=r)res+=(r-l+1)*45/9;
        cout<<res<<endl;
    }

    //for(int i=1;i<=n;i++)cout<<a[i]<<endl;
    return 0;
}

• Subtask 1: 40 / 50