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- #include <bits/stdc++.h>
- using namespace std;
- int main(){
- int sz;
- scanf("%d", &sz);
- for(int d = 1; d <= sz; ++d){
- for(int l = 1; l <= sz - d + 1; ++l){
- int r = l + d - 1;
- cout << '(' << l << ',' << r << ')';
- if(l < sz - d + 1){
- cout << ',';
- }
- }
- cout << '\n';
- }
- return 0;
- }
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