#include <stdio.h>
int main() {
int t;
scanf("%d",&t);
while(t--) {
int k,n;
scanf("%d",&k);
scanf("%d",&n);
int num[15][14]={0};
//0층 채우기
for (int i=0; i<n; i++) {
num[0][i]=i+1;
}
for (int i=1; i<=k; i++) {
int sum=0;
for(int j=0; j<n; j++) {
sum+=num[i-1][j];
num[i][j]=sum;
}
}
printf("%d\n",num[k][n-1]);
}
return 0;
}
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