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44 lines (41 loc) · 1014 Bytes
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CC-SHUFFLE.cpp
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44 lines (41 loc) · 1014 Bytes
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define setbits(x) __builtin_popcountll(x)
#define zrobits(x) __builtin_ctzll(x)
#define mod 1000000007
#define ps(x,y) fixed<<setprecision(y)<<x
#define w(x) int x; cin>>x; while(x--)
void shammi() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}
int main() {
shammi();
w(t) {
ll n, k; cin >> n >> k;
ll A[n];
for (ll i = 0; i < n; i++) cin >> A[i];
for (ll i = 0; i < n - k; i++) {
if (A[i] > A[i + k]) {
swap(A[i], A[i + k]);
}
}
bool sorted = true;
for (ll i = n - k; i < n - 1; i++) {
if (A[i] > A[i + 1]) {
sorted = false;
break;
} else sorted = true;
}
// cout << (sorted) ? "yes\n" : "no\n";
if (sorted) cout << "yes\n";
else cout << "no\n";
}
return 0;
}