제출 #1253501

#제출 시각아이디문제언어결과실행 시간메모리
1253501iq500Trol (COCI19_trol)C++20
10 / 50
0 ms328 KiB
#include <bits/stdc++.h> using namespace std; int main() { int t; cin>>t; while(t--){ //for(int i=1998; i<2019; i++) cout<<i<<" "; unsigned long long int l, r, ttl=0, ans=0, bas, son; cin>>l>>r; ttl=r-l+1; if(ttl>9){ ans+=(ttl/9)*45; bas=l%9; if(bas==0) bas=9; if(bas!=1){ for(int i=bas; i<=9; i++){ ans+=i; } } son=r%9; if(son!=0){ for(int i=son; i>=1; i--){ ans+=i; } } } else{ while(l<=r){ ans+=l%9; if(l%9==0) ans+=9; l++; } } cout<<ans<<"\n"; } }
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