14 lines
216 B
C++
14 lines
216 B
C++
#include<cstdio>
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int n,a,b,c,d,e,res;
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int main()
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{
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scanf("%d",&n);
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while(n-->0)
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{
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scanf("%d%d%d%d%d",&a,&b,&c,&d,&e);
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if(a+b+c+d+e<20) res++;
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}
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printf("%d\n",res);
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return 0;
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}
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