Submission #331225

#	Time	Username	Problem	Language	Result	Execution time	Memory
331225		Sho10	Trol (COCI19_trol)	C++14	50 / 50	1 ms	364 KiB

trol

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long
#define double long double
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000007
#define PI 3.14159265359
#define MAXN 100005
#define INF 1000000005
#define LINF 1000000000000000005ll
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll q,l,r;
ll query(ll pos){
    if(pos==0){
        return 0;
    }
ll x=pos;
x/=9;
x*=5*9;
x+=(pos%9+1)*(pos%9)/2;
return x;
}
int32_t main(){
CODE_START
cin>>q;
while(q--){
    cin>>l>>r;
    cout<<query(r)-query(l-1)<<endl;
}
}

• Subtask 1: 50 / 50