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답안 #313609

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
313609 2020-10-16T11:32:40 Z YJU Trol (COCI19_trol) C++14
50 / 50
 1 ms 384 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=2e5+5;
const ld pi=3.14159265359;
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll cal(ll k){
	ll tmp=0;
	REP1(i,9){
		tmp+=(k/9+(k%9>=i?1:0))*i;
	}
	return tmp;
}

ll Q,l,r;

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>Q;
	while(Q--){
		cin>>l>>r;
		cout<<cal(r)-cal(l-1)<<"\n";
	}
	return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct