Submission #1256076

#	Time	Username	Problem	Language	Result	Execution time	Memory
1256076		elotelo966	Trol (COCI19_trol)	C++20	50 / 50	2 ms	2632 KiB

trol

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define OYY LLONG_MAX
#define mod 1000000007
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define FOR for(int i=1;i<=n;i++)
#define mid (start+end)/2
#define lim 100005
#define fi first
#define se second
#define pb push_back

vector<int> v[lim];

int n,l,r;

int32_t main(){
    faster
    int t;cin>>t;
    while(t--){
        cin>>l>>r;
        l--;
        int tut=r%9;
        int cev1=(r/9)*9*10/2+tut*(tut+1)/2;
         tut=l%9;
        int cev2=(l/9)*9*10/2+tut*(tut+1)/2;
        cout<<cev1-cev2<<endl;
    }
    return 0;
}

• Subtask 1: 50 / 50