제출 #704752

#제출 시각아이디문제언어결과실행 시간메모리
704752pccTrol (COCI19_trol)C++14
50 / 50
1 ms212 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long ll calc(ll t){ if(t == 0)return 0LL; ll k = t%9; ll total = 0; if(k != 0){ for(int i = 1;i<=k;i++)total += i; } return 45LL*(t/9)+total; } int main(){ ios::sync_with_stdio(0);cin.tie(0);cout.tie(0); int q; cin>>q; while(q--){ ll a,b; cin>>a>>b; cout<<calc(b)-calc(a-1)<<'\n'; } }
#Verdict Execution timeMemoryGrader output
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