Submission #976002

#TimeUsernameProblemLanguageResultExecution timeMemory
976002vjudge1Trol (COCI19_trol)C++17
20 / 50
1099 ms348 KiB
#include <iostream>
using namespace std;

// Fungsi untuk mengubah bilangan menjadi bilangan dengan satu digit
int satuDigit(int n) {
    while (n >= 10) {
        int sum = 0;
        while (n > 0) {
            sum += n % 10;
            n /= 10;
        }
        n = sum;
    }
    return n;
}

int main() {
    int Q;
    cin >> Q;

    for (int i = 0; i < Q; ++i) {
        long long L, R;
        cin >> L >> R;

        long long total = 0;
        for (long long j = L; j <= R; ++j) {
            total += satuDigit(j);
        }
        cout << total << endl;
    }

    return 0;
}
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