#include <bits/stdc++.h>

using namespace std;
const int N = 10;
int a[N], res[N];

int main() {
    printf("a:");
    for (int i = 0; i < N; ++i) {
        a[i]=i;
        printf("%2d ",a[i]);
    }

    printf("\nb:");
    cout<<" "<<0<<" ";
    for (int i = 1; i <N ; ++i) {
        res[i]= a[i] + res[i - 1];
        printf("%2d ", res[i]);
    }
    return 0;
}