이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
///Never gonna give you up.
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
typedef long long ll;
typedef long long int lli;
typedef unsigned long long ull;
using namespace std;
using namespace __gnu_pbds;
template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;
const ll mod=(ll)1e9+7;
const ll mod1=998244353;
///the defines :)
#define endl '\n'
#define vi vector<int>
#define vll vector<ll>
#define ent(arr) for(int i=0;i<arr.size();i++)cin>>arr[i];
#define all(arr) arr.begin(),arr.end()
#define allr(arr) arr.rbegin(),arr.rend()
#define sz size()
#define int long long
int n,d;
vi arr;
int dp[7002][7002];
int ans(int idx,int prv)
{
if(idx==n)return 0;
if(dp[idx][prv]!=-1)return dp[idx][prv];
int e=0;
if(arr[idx]>=arr[prv])
e=max(e,ans(idx+1,idx)+1-(arr[idx]==arr[prv]));
if(idx-prv<d||prv==n)
e=max(e,ans(idx+1,prv));
return dp[idx][prv]=e;
}
void preprocess() {}
void solve()
{
cin>>n>>d;
memset(dp,-1,sizeof dp);
arr.resize(n);
ent(arr);
arr.push_back(-1e9);
cout<<ans(0,n)<<endl;
}
signed main()
{
// freopen("div7.in","r",stdin);
//freopen("div7.out","w",stdout);
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
preprocess();
//bla();
int t=1;
//cin>>t;
while(t--)
solve();
}
컴파일 시 표준 에러 (stderr) 메시지
Main.cpp: In function 'void solve()':
Main.cpp:18:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | #define ent(arr) for(int i=0;i<arr.size();i++)cin>>arr[i];
| ~^~~~~~~~~~~
Main.cpp:43:4: note: in expansion of macro 'ent'
43 | ent(arr);
| ^~~
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