# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1007325 | vjudge1 | Trol (COCI19_trol) | C++17 | 1097 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 <iostream>
#define ll long long
using namespace std;
// Fungsi untuk mengurangi angka menjadi satu digit dengan menjumlahkan digit-digitnya
int reduceToOneDigit(int num) {
while (num >= 10) {
int sum = 0;
while (num > 0) {
sum += num % 10;
num /= 10;
}
num = sum;
}
return num;
}
int main() {
int q;
cin >> q; // Membaca jumlah pertanyaan
while (q--) {
ll l, r;
cin >> l >> r; // Membaca rentang L dan R
ll ans = 0;
for (ll i = l; i <= r; ++i) {
ans += reduceToOneDigit(i);
}
cout << ans << endl;
}
return 0;
}
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