Submission #209328

#TimeUsernameProblemLanguageResultExecution timeMemory
209328papaTrol (COCI19_trol)C++14
50 / 50
5 ms376 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; int q; ll l,r; //caka je u tome sto je taj niz periodican //jer suma cifara daje isti ostatak kao i sam taj broj //pa ce onda redom da budu 1,2,3,4,5,6,7,8,9,1... //pronadjemo granice i onda samo vidimo koliko se takvih intervala pojavljuje int main() { ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); cerr.tie(0); cin >> q; while(q--) { cin >> l >> r; ll sol = 0; if(r-l<=(ll)20) { //cout << "ovde" << "\n"; for(ll i=l;i<=r;i++) { if(i%(ll)9 == (ll)0) sol+=(ll)9; else sol+=(ll)(i%(ll)9); } cout << sol << "\n"; } else { while(1) { if((l%(ll)9)==(ll)1) break; else { sol+=((l%(ll)9)==(ll)0) ? 9 : (l%(ll)9); l++; } } while(1) { if((r%(ll)9)==(ll)0) break; else { sol+=(r%(ll)9); r--; } } ll cnt = (r-l+1)/(ll)9; sol+=cnt*(ll)45; cout << sol << "\n"; } } return 0; }
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