#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<ll, ll> pii;
typedef pair<ld, ld> pld;
ll n, k;
ll dp[5009][5009];
ll a[5009];
pii b[5009];
ll team[5009];
ll main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
cin >> n >> k;
for(ll i = 0; i < n; ++i){
cin >> a[i];
b[i] = {a[i], i};
}
sort(b, b+n);
for(ll i = 0; i < n; ++i){
team[b[i].ss] = i/k;
}
for(ll i = 0; i < n; ++i)
for(ll j = 0; j <= (n-1)/k; ++j){
if(i == 0){
if(team[i] == j)
dp[i][j] = 0;
else
dp[i][j] = 1;
}
else if(j == 0){
dp[i][j] = 1+dp[i-1][j];
if(team[i] == j)
--dp[i][j];
}
else{
dp[i][j] = 1+min(dp[i-1][j], dp[i-1][j-1]);
if(team[i] == j)
--dp[i][j];
}
}
cout << dp[n-1][(n-1)/k] << "\n";
}
Compilation message
studentsko.cpp:19:9: error: '::main' must return 'int'
ll main() {
^
