Submission #1075480

#	Time	Username	Problem	Language	Result	Execution time	Memory
1075480		Muhammad_Aneeq	Catfish Farm (IOI22_fish)	C++17	3 / 100	53 ms	7268 KiB

fish

#include <vector>
using namespace std;
long long max_weights(int N, int M, vector<int> X, vector<int> Y,vector<int> W)
{
    bool subt1=1,subt2=1,subt3=1;
    for (int i=0;i<M;i++)
    {
        if (X[i]%2)
            subt1=0;
        if (X[i]>1)
            subt2=0;
        if (Y[i]!=0)
            subt3=0;
    }
    if (subt1)
    {
        long long sm=0;
        for (int i=0;i<M;i++)
            sm+=W[i];
        return sm;
    }
    if (subt2)
    {
        long long sm[N]={};
        vector<vector<long long>>val(2,vector<long long>(N,0));
        for (int i=0;i<M;i++)
            val[X[i]][Y[i]]=W[i];
        sm[0]=val[1][0];
        for (int i=1;i<N;i++)
            sm[i+1]=sm[i]+val[1][i];
        long long ans=sm[N-1];
        long long x=0;
        for (int i=0;i<N;i++)
        {
            x+=val[0][i];
            ans=max(ans,x+sm[N-1]-sm[i]);
        }
        return ans;
    }
    if (subt3)
    {
        long long dp[N][2]={};
        int val[N]={};
        for (int i=0;i<M;i++)
            val[X[i]]=W[i];
        dp[0][0]=0,dp[0][1]=val[0];
        long long ans=0;
        for (int i=1;i<N;i++)
        {
            if (i>1)
                dp[i][0]=max(dp[i-2][0],dp[i-2][1])+val[i];
            else
                dp[i][0]=val[i];
            if (i<N-1)
                dp[i][1]=max(dp[i][0],dp[i-1][0]+val[i]);
            ans=max(ans,max(dp[i][0],dp[i][1]));
        }
        return ans;
    }
    return 0;
}

• Subtask 1: 3 / 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