Submission #1227654

#TimeUsernameProblemLanguageResultExecution timeMemory
1227654thesenTrol (COCI19_trol)C++20
50 / 50
0 ms328 KiB
#include <bits/stdc++.h> #define pb push_back #define ll long long #define vint vector <int> #define vll vector <ll> #define vbool vector<bool> #define pairint pair<int,int> #define pairll pair<ll,ll> #define fi first #define sc second #define rever greater<ll>() using namespace std; void solve(ll tc){ ll l, r; cin >> l >> r; l--; ll x = l%9 + 1; l = (l/9 * 45) + x * (x-1) / 2; x = r%9 + 1; r = (r/9 * 45) + x * (x-1) / 2; cout << r - l << endl; } int main(){ ll t; cin >> t; for(int i = 1; i <= t; i++){ solve(i); } }
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