Submission #724350

#	Time	Username	Problem	Language	Result	Execution time	Memory
724350		nihaddhuseynli	Catfish Farm (IOI22_fish)	C++17	18 / 100	94 ms	14304 KiB

fish

#include "fish.h"
#include <bits/stdc++.h>
#include <vector>
using namespace std;
typedef long long int ll;
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,std::vector<int> W) {
    ll ans =0;
    ll a[300005];
    ll flag=0,flag1=0;
    for(int i =0;i<M;i++)
    {
        if(X[i]%2==1)
        {
            flag=1;
        }
        if(Y[i]!=0)
        {
            flag1=1;
        }
        a[X[i]]+=W[i];
    }
    if(flag==0)
    {
        ans=0;
        for(int i =0;i<M;i++)
        {
            ans+=W[i];
        }
    }
    else if(flag1==0)
    {
        ans=0;
        ll dp[300005][2];
        memset(dp,0,sizeof(dp));
        dp[1][0]=a[1];
        dp[1][1]=a[0];
        for(int i =2;i<N;i++)
        {
            dp[i][0]=max(dp[i-1][1]+a[i],dp[i-1][0]);
            dp[i][1]=max({dp[i-2][0]+a[i-1],dp[i-1][1],dp[i-2][1]+a[i-1]});
        }
        ans=max(dp[N-1][0],dp[N-1][1]);
    }
    else
    {
        ll b[300005][2];
        memset(b,0,sizeof(b));
        for(int i =0;i<M;i++)
        {
            b[Y[i]][X[i]]+=W[i];
        }
        for(int i =1;i<N;i++)
        {
            b[i][0]+=b[i-1][0];
            b[i][1]+=b[i-1][1];
        }
        ans=max(b[N-1][0],b[N-1][1]);
        if(N>2)
        {
            for(int i =0;i<N;i++)
            {
                ll cnt=b[N-1][1]-b[i][1];
                ans=max(ans,cnt+b[i][0]);
            }
        }
    }
    return ans;

}

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