제출 #814411

#제출 시각아이디문제언어결과실행 시간메모리
814411Tunglam07Trol (COCI19_trol)C++17
50 / 50
1 ms324 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); long long q; cin >> q; while(q--) { long long left,right,ans=0; cin >> left >> right; if((right-left+1)%9==0) { ans=(right-left+1)*5; cout << ans << endl; } else { ans=(right-left+1)/9*45; long long t=(right-left+1)%9; while(t--) { if(left%9==0) { ans+=9; } else { ans+=left%9; } left++; } cout << ans << endl; } } }
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