#include<bits/stdc++.h>
using namespace std;
const int MAXN = 1e3;
const long long INF = 1e15;
int n, k;
int a[MAXN+5];
int dp[MAXN+5][MAXN+5][5];
long long f(int idx, int cnt, int state){
if(cnt > k) return INF;
if(idx == n){
if(state == 1) return 0;
else{
if(cnt < k) return 1;
return INF;
}
}
long long &ret = dp[idx][cnt][state];
if(ret != -1) return ret;
ret = INF;
if(state){
ret = min(ret, f(idx+1, cnt, 1) + (a[idx+1]-a[idx]));
ret = min(ret, f(idx+1, cnt, 0) + (a[idx+1]-a[idx]));
}
else{
ret = min(ret, f(idx+1, cnt+1, 1) + 1);
ret = min(ret, f(idx+1, cnt+1, 0) + 1);
}
return ret;
}
int main(){
memset(dp, -1, sizeof(dp));
cin>>n>>k;
for(int i=1; i<=n; i++){
cin>>a[i];
}
cout<<f(0,0,0)<<endl;
return 0;
}
Compilation message
stove.cpp: In function 'long long int f(int, int, int)':
stove.cpp:19:37: error: cannot bind non-const lvalue reference of type 'long long int&' to an rvalue of type 'long long int'
19 | long long &ret = dp[idx][cnt][state];
| ~~~~~~~~~~~~~~~~~~^
