#include <stdio.h>
#include <string.h>
#include <stdlib.h>


int main() {
    int n, a, b, s;
    scanf("%d", &n);
    int pa[n][n];
    
    for(int i=0; i<n; i++){
        for(int j=0; j<=i; j++){
            if(j==0 || j==i)
                pa[i][j] = 1;
            else
                pa[i][j] = pa[i-1][j-1] + pa[i-1][j];
        }
    }

    for(int i=0; i<n; i++){
        for(int j=0; j<=i; j++){
            printf("%d ", pa[i][j]);
        }
        printf("\n");
    }

    printf("\n");

    scanf("%d %d", &a, &b);
    s = a+b;

    printf("%d", pa[s][b]);
    
    return 0;
}

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