Submission #976027

#TimeUsernameProblemLanguageResultExecution timeMemory
976027vjudge1Trol (COCI19_trol)C++17
0 / 50
1 ms348 KiB
#include <bits/stdc++.h> using namespace std; int main(){ long long n; cin >> n; long long l, r; for(int i = 0; i < n; i++){ cin >> l >> r; if(l == r){ if(l % 9 == 0){ cout << 9 << endl; }else{ cout << l % 9 << endl; }break; } long long ans1 = 0, ans2 = 0; ans1 = (r / 9) * 45; for(int j = 1; j <= r % 9; j++){ ans1 += j; }ans2 = ((l - 1) / 9) * 45; for(int j = 1; j <= (l - 1) % 9; j++){ ans2 += l; }cout << ans1 - ans2 << endl; } }
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