C++尺举法

#include<stdio.h> 
#include<iostream> 
#include<vector>
using namespace std;

int main(){
	int m, n; 
	vector<int> t;
	cin >> m >> n;
	for(int i = 0; i < m; i++){
		t.push_back(i);
	}
	
	int len = t.size();
	int l = 0, r = 0, cnt = 0;
	while(l <= r && r < len){
		cnt++;
		if(cnt == n){
			for(int j = l; j <= r; j++){
				cout << t[j] << " ";
			}
			cout << endl;
			l++; cnt--;
		}
		r++;
	}
	
	return 0;
}