19 lines
253 B
C++
19 lines
253 B
C++
#include<cstdio>
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using namespace std;
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int main()
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{
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int n;
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unsigned long long ans=0;
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scanf("%d",&n);
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int w[n],x;
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for(int i=0;i<n;i++) scanf("%d",w+i);
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for(int i=0;i<n;i++)
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{
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scanf("%d",&x);
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ans+=x*w[i];
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}
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printf("%lld\n",ans);
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return 0;
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}
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