Submission #1189378

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189378		mertbbm	Catfish Farm (IOI22_fish)	C++20	0 / 100	1002 ms	2162688 KiB

fish

#include "fish.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;

#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
typedef pair<int,pii>pi2;
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

long long max_weights(int32_t n, int32_t m, vector<int32_t>a, vector<int32_t>b, vector<int32_t>w){
	int arr[n+5][n+5];
	memset(arr,0,sizeof(arr));
	
	for(int x=0;x<m;x++){
		a[x]++;
		b[x]++;
		arr[a[x]][b[x]]+=w[x];
	}
	
	int dp[n+5][n+5][2];
	for(int x=0;x<=n;x++){
		dp[0][x][0]=dp[0][x][1]=-1e15;
	}
	dp[0][0][0]=0;
	for(int x=1;x<=n;x++){
		//go up
		int cur=-1e15;
		int cnt=0;
		for(int y=0;y<=n;y++){
			cur=max(cur+arr[x-1][y],dp[x-1][y][0]);
			if(x>1){
				cur=max(cur,dp[x-2][0][0]);
			}
			dp[x][y][0]=cur;
			dp[x][y][1]=cur;
			cnt+=arr[x-1][y];
		}
		
		if(x>1){
			dp[x][n][0]=max(dp[x][n][0],dp[x-2][n][0]+cnt);
			dp[x][n][1]=dp[x][n][0];
		}
		
		//go down
		cur=-1e15;
		for(int y=n;y>=0;y--){
			cur=max(cur,dp[x-1][y][1]);
			dp[x][y][1]=max(dp[x][y][1],cur);
			cur+=arr[x][y];
		}
		//show(x,x);
		//for(int y=0;y<=n;y++){
			//cout << dp[x][y][0] << " ";
		//}
		//cout << "\n";
		//for(int y=0;y<=n;y++){
			//cout << dp[x][y][1] << " ";
		//}
		//cout << "\n\n";
	}
	
	int maxi=0;
	for(int x=1;x<=n;x++){
		for(int y=0;y<=n;y++) maxi=max({maxi,dp[x][y][0],dp[x][y][1]});
	}
	return maxi;
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16