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- #include <bits/stdc++.h>
- using namespace std;
- int main(){
- int n, k;
- cin >> n >> k;
- vector<vector<int>> dp(n, vector<int>(k, 0));
- for(int i = 0; i < n; i++){
- dp[i][0] = 1;
- }
- for(int i = 0; i < n; i++){
- for(int j = 1; j < k; j++){
- dp[i][j] = dp[i][j-1];
- if(i>j){
- dp[i][j] += dp[i-j-1][j];
- }
- if(i==j){
- dp[i][j]++;
- }
- }
- }
- cout << dp[n-1][k-1];
- return 0;
- }
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