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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
17 lines
341 B
C++
17 lines
341 B
C++
#include <stdio.h>
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int main(){
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int n,i,a;
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int f[50];
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while(scanf("%d",&n),n){
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for(i=0;i<50;i++)
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f[i]=0;
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for(i=0;i<n*6;i++){
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scanf("%d",&a);
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f[a]=1;
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}
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for(i=1;i<50;i++)
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if(f[i]==0)i=60;
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printf("%s\n",i>55?"No":"Yes");
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}
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}
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