//orz Dominater069
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
long long count_triples(std::vector<int> h) {
ll ans = 0;
ll N = h.size();
//i,j,k
for(int i=0;i<N;i++){
ll j = i+h[i];if(j>=N) continue;
ll k = j-h[j];
if(k>=0) ans += (i+h[k]==k);
if(i+h[j]==j-h[j]) continue;
k = i+h[j];
if(k<N) ans += (j-h[k]==k);
}
for(int j=0;j<N;j++){
ll i = j-h[j];if(i<0) continue;
ll k = j-h[j];
if(k>=0) ans += (i+h[k]==k);
if(i+h[j]==j-h[j]) continue;
k = i+h[j];
if(k<N) ans += (j-h[k]==k);
}
return ans;
}
std::vector<int> construct_range(int M, int K) {
vector<int> res; res.push_back(1);
for (int i = 1; i < M; i ++) res.push_back(i);
return res;
}
/*void run_part1() {
int N;
assert(1 == scanf("%d", &N));
std::vector<int> H(N);
for (int i = 0; i < N; i++)
assert(1 == scanf("%d", &H[i]));
fclose(stdin);
long long T = count_triples(H);
printf("%lld\n", T);
fclose(stdout);
}
void run_part2() {
int M, K;
assert(2 == scanf("%d %d", &M, &K));
fclose(stdin);
std::vector<int> H = construct_range(M, K);
int N = H.size();
printf("%d\n", N);
for (int i = 0; i < N; i++)
printf("%d%c", H[i], " \n"[i + 1 == N]);
fclose(stdout);
}
int main() {
int part;
assert(1 == scanf("%d", &part));
if (part == 1)
run_part1();
else if (part == 2)
run_part2();
return 0;
}*/
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