2.2.png
2.1.png
#include<iostream>
using namespace std;
int main()
{
int room, pi, qi, cangoroom=0;
cin >> room;
for (int i = 0; i < room; i++)
{
cin >> pi >> qi;
if (pi <= qi - 2)
{
cangoroom++;
}
}
cout << cangoroom;
return 0;
}
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本文标题：George and Accommodation
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