讨论串/cpp_gcc@rextester_bot

#include <bits/stdc++.h> using namespace std; int main (){ int n; cin>>n; int x[n]; int y[n]; for(int i=0; i<n; i++){ cin>>x[i]>>y[i]; cout<<x[i]<<" "<<y[i]<<endl; } int k=0; for(int i=0; i<n; i++){ if(x[i]!=y[i]){ k++; }} cout<<k<<endl; return 0; } /stdin 7 1 3 2 4 2 2 3 5 2 2 3 1 2 2