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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define fast_io ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
  4. #define int long long
  5. #define endl '\n'
  6.  
  7. void solve(){
  8. 	int n,m;
  9. 	cin>>n>>m;
  10. 	cout<<n+m-1<<endl;
  11. 	for(int i=1;i<=n;i++){
  12. 		for(int j=1;j<=m;j++){
  13. 			cout<<i<<" "<<j<<endl;
  14. 		}
  15. 	}
  16. }
  17.  
  18. int32_t main(){
  19.     fast_io;
  20.     int t=1;
  21.  
  22.     while(t--) solve();
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/1EiXC3
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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