제출 #227541

#제출 시각아이디문제언어결과실행 시간메모리
227541kshitij_sodaniTrol (COCI19_trol)C++17
50 / 50
5 ms384 KiB
#include <iostream> #include <bits/stdc++.h> using namespace std; typedef int64_t llo; #define mp make_pair #define pb push_back #define a first #define b second #define endl "\n" int main(){ ios_base::sync_with_stdio(false); cin.tie(NULL); llo q; cin>>q; while(q--){ llo l,r; llo tot=0; cin>>l>>r; for(llo i=0;i<9;i++){ llo ll=l+9-i; llo rr=r+9-i; llo co=i; if(i==0){ co=9; } if(rr>0){ tot+=(co*((rr)/9)); } if(ll>0){ tot-=co*((ll-1)/9); } } cout<<tot<<endl; } return 0; }
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