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https://github.com/Kiritow/OJ-Problems-Source.git
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20 lines
309 B
C++
20 lines
309 B
C++
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#include<iostream>
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using namespace std;
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int main()
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{
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int c,n,m,l;
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cin>>c;
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while(c--)
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{
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cin>>n;
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int s=0;
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for(int i=0;i<n;++i)
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{
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cin>>m>>l;
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s^=m%(l+1);
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}
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cout<<(s?"No":"Yes")<<endl;
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}
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return 0;
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}
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