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Submission #1075752

# Submission time Handle Problem Language Result Execution time Memory
1075752 2024-08-26T09:00:47 Z Muhammad_Aneeq Catfish Farm (IOI22_fish) C++17
18 / 100
 56 ms 7260 KB 
#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,subt4=(N<=300);
    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 (Y[i]>8)
            subt4=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]={};
        long long val[N][2]={};
        for (int i=0;i<M;i++)
            val[Y[i]][X[i]]=W[i];
        sm[0]=val[0][1];
        for (int i=1;i<N;i++)
            sm[i]=sm[i-1]+val[i][1];
        long long ans=sm[N-1];
        long long x=0;
        for (int i=0;i<N;i++)
        {
            x+=val[i][0];
            if (N>2)
                ans=max(ans,x+sm[N-1]-sm[i]);
        }
        ans=max(ans,x);
        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;
        long long mx=0;
        for (int i=1;i<N;i++)
        {
            if (i>1)
                dp[i][0]=mx+val[i];
            if (i<N-1)
                dp[i][1]=max(dp[i][0],dp[i-1][0]+val[i]);
            mx=max(mx,max(dp[i-1][0],dp[i-1][1]));
            ans=max(ans,max(dp[i][0],dp[i][1]));
        }
        return ans;
    }
    if (N<=3000)
    {
        vector<vector<vector<long long>>>dp(2,vector<vector<long long>>(N+10,vector<long long>(N+10,0)));
        long long val[N+10][N+10]={};
        for (int i=0;i<M;i++)
            val[X[i]+1][Y[i]+1]=W[i];
        long long pre[N][N]={};
        for (int i=0;i<=N;i++)
        {
            pre[i][0]=val[i][0];
            for (int j=1;j<=N;j++)
                pre[i][j]=pre[i][j-1]+val[i][j];
        }
        long long ans=0;
        for (int i=0;i<=N;i++)
            dp[0][0][i]=dp[1][0][i]=dp[0][i][0]=dp[1][i][0]=-1e17;;
        for (int i=1;i<=N;i++)
        {
            for (int j=0;j<=N;j++)
            {
                for (int k=0;k<=N;k++)
                {
                    if (j<k)
                    {
                        dp[0][i][j]=max(dp[0][i][j],dp[0][i-1][k]+pre[i][k]-pre[i][j]);
                        dp[1][i][k]=max(dp[1][i][k],dp[0][i-1][k]+pre[i][k]-pre[i][j]);
                    }
                    else
                    {
                        dp[0][i][j]=max(dp[0][i][j],dp[1][i-1][k]+pre[i-1][j]-pre[i-1][k]);
                        dp[1][i][j]=max(dp[1][i][j],dp[1][i-1][k]+pre[i-1][j]-pre[i-1][k]);
                    }
                }
                dp[1][i][j]=max(dp[1][i][j],dp[0][i-1][j]+pre[i][j]);
            }
        }
        for (int i=0;i<=N;i++)
            for (int j=0;j<=N;j++)
                ans=max(ans,max(dp[0][i][j],dp[1][i][j]));
        return ans;
    }
    return 0;
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:5:34: warning: variable 'subt4' set but not used [-Wunused-but-set-variable]
    5 |     bool subt1=1,subt2=1,subt3=1,subt4=(N<=300);
      |                                  ^~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2136 KB Output is correct
2 Correct 34 ms 2640 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 56 ms 7248 KB Output is correct
6 Correct 53 ms 7260 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 35 ms 6172 KB Output is correct
3 Correct 39 ms 7248 KB Output is correct
4 Correct 13 ms 2140 KB Output is correct
5 Correct 17 ms 2652 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 15 ms 4464 KB Output is correct
13 Correct 17 ms 4940 KB Output is correct
14 Correct 29 ms 4444 KB Output is correct
15 Correct 18 ms 4696 KB Output is correct
16 Correct 19 ms 4432 KB Output is correct
17 Correct 17 ms 4696 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 2140 KB Output is correct
3 Correct 11 ms 3372 KB Output is correct
4 Correct 8 ms 3160 KB Output is correct
5 Correct 18 ms 4680 KB Output is correct
6 Correct 15 ms 4704 KB Output is correct
7 Correct 18 ms 4680 KB Output is correct
8 Correct 32 ms 4668 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 2140 KB Output is correct
3 Correct 11 ms 3372 KB Output is correct
4 Correct 8 ms 3160 KB Output is correct
5 Correct 18 ms 4680 KB Output is correct
6 Correct 15 ms 4704 KB Output is correct
7 Correct 18 ms 4680 KB Output is correct
8 Correct 32 ms 4668 KB Output is correct
9 Incorrect 16 ms 2652 KB 1st lines differ - on the 1st token, expected: '99999', found: '0'
10 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2136 KB Output is correct
2 Correct 34 ms 2640 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 56 ms 7248 KB Output is correct
6 Correct 53 ms 7260 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 35 ms 6172 KB Output is correct
9 Correct 39 ms 7248 KB Output is correct
10 Correct 13 ms 2140 KB Output is correct
11 Correct 17 ms 2652 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 15 ms 4464 KB Output is correct
19 Correct 17 ms 4940 KB Output is correct
20 Correct 29 ms 4444 KB Output is correct
21 Correct 18 ms 4696 KB Output is correct
22 Correct 19 ms 4432 KB Output is correct
23 Correct 17 ms 4696 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 2 ms 2140 KB Output is correct
26 Correct 11 ms 3372 KB Output is correct
27 Correct 8 ms 3160 KB Output is correct
28 Correct 18 ms 4680 KB Output is correct
29 Correct 15 ms 4704 KB Output is correct
30 Correct 18 ms 4680 KB Output is correct
31 Correct 32 ms 4668 KB Output is correct
32 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '3', found: '2'
33 Halted 0 ms 0 KB -