#include <stdio.h>

int main() {
    int data[9] = {1,2,3,4,5,6,7,8,9};
    int m = 3;

    int low, high, mid;
    int result = 0;

    low = 9;  
    high = 45;

    while (low <= high) {
        mid = (low + high) / 2;

        int count = 1;
        int sum = 0;

        for (int i = 0; i < 9; i++) {
            if (sum + data[i] > mid) {
                count++;
                sum = data[i];
            } else {
                sum += data[i];
            }
        }

        if (count <= m) {
            result = mid;
            high = mid - 1;
        } else {
            low = mid + 1;
        }
    }

    printf("%d ", result);

    return 0;
}