Submission #802193

#	Time	Username	Problem	Language	Result	Execution time	Memory
802193		NothingXD	Giraffes (JOI22_giraffes)	C++17	59 / 100	53 ms	56148 KiB

giraffes

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef double ld;
void debug_out(){cerr<<endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cerr << H << ' ';
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 300 + 10;

int n, a[maxn];
int dp[maxn][maxn][maxn];

int main(){
	cin >> n;
	for (int i = 1; i <= n; i++){
		cin >> a[i];
	}
	for (int i = n; i; i--){
		for (int j = 1; j <= n; j++){
			dp[i][i][j] = (a[j] != i);
		}
		for (int j = i+1; j <= n; j++){
			for (int k = 1; k+j-i <= n; k++){
				dp[i][j][k] = min({dp[i+1][j][k] + (a[k+j-i] != i), dp[i+1][j][k+1] + (a[k] != i)
						, dp[i][j-1][k] + (a[k+j-i] != j), dp[i][j-1][k+1] + (a[k] != j)});
			}
		}
	}
	cout << dp[1][n][1] << '\n';
}

• Subtask 1: 10 / 10
• Subtask 2: 22 / 22
• Subtask 3: 27 / 27
• Subtask 4: 0 / 41