# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
975675 | vjudge1 | Trol (COCI19_trol) | C++17 | 1 ms | 432 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main(){
ll q; cin >> q;
for(int i = 0; i < q; i++){
ll left, right;
cin >> left >> right;
ll hasil = 0;
ll kepake_kok = (right - left) / 9;
// cerr << kepake_kok << endl;
hasil += kepake_kok * 45;
ll idx = right - (kepake_kok * 9);
while(idx >= left){
if(idx % 9 == 0){
hasil += 9;
}else{
hasil += idx % 9;
}
// cerr << hasil << endl;
idx--;
}
cout << hasil << endl;
}
return 0;
}
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