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救命啊啊啊啊啊啊啊啊啊!!!!!!!!!!!!!unknown
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3 years ago
619 B
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#include <stdio.h> int A[150][150]; int B[100007]; int C[100007]; int main(void){ int N,x,y,D=1,i,j; scanf("%d",&N); for(int i=0;i<=120;i++){ A[i][0]=1; for(int j=1;j<=120;j++){ A[i][j]=0; } } for(int i=1;i<=120;i++){ for(int j=1;j<=120;j++){ A[i][j]=A[i-1][j-1]+A[i-1][j]; } } for(int n=0;n<N;n++){ scanf("%d",&B[n]); } for(int n=0;n<N;n++){ scanf("%d",&C[n]); } for(int n=0;n<N;n++){ D=D*A[(B[n])][(C[n])]; } printf("%d\n",D); return 0; }
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