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Submission #1023101

# Submission time Handle Problem Language Result Execution time Memory
1023101 2024-07-14T09:41:07 Z vjudge1 Catfish Farm (IOI22_fish) C++17
18 / 100
 180 ms 108604 KB 
#include "fish.h"
#include <bits/stdc++.h>

#pragma GCC optimize("Ofast")

using namespace std;

#define ll long long
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define sz(s) (int)s.size()
#define lb lower_bound
#define ub upper_bound
#define mem(a,i) memset(a,i,sizeof(a))

const int MAX=2e5+10;

int n;
vector<pair<ll,ll>> y[MAX];
vector<ll> p[MAX];
vector<vector<ll>> dp[MAX];
vector<ll> can[MAX];

ll getSum(int x,ll l,ll r){
    if(l>r)return 0;
    int L=lb(all(y[x]),make_pair(l,0ll))-y[x].begin();
    int R=ub(all(y[x]),make_pair(r+1,0ll))-y[x].begin()-1;
    if(L<=R){
        if(L==0)return p[x][R];
        return p[x][R]-p[x][L-1];
    }
    return 0;
}

vector<vector<ll>> sumF[MAX];
vector<vector<ll>> sumB[MAX];
vector<pair<int,int>> vec[MAX];
vector<vector<ll>> w;

struct t300{

    ll dp[310][310][2];

    ll getP(int i,int l,int r){
        if(l>r||i==0)return 0;
        return p[i][r]-p[i][l-1];
    }

    ll solve300(){
        for(int i=1;i<=n;i++){
            p[i].resize(n+10);
            p[i][0]=0;
            for(int j=1;j<=n;j++){
                p[i][j]=p[i][j-1]+w[i][j];
            }
        }
        mem(dp,0);
        for(int i=2;i<=n;i++){
            {
                ll mx=0;
                for(int j=n;j>=1;j--){
                    mx=max(mx,max(dp[i-1][j][0],dp[i-1][j][1])+p[i][j]);
                    dp[i][j][0]=mx-p[i][j];
                }

            }
            for(int j=0;j<=n;j++){
                {
                    for(int f=0;f<=j;f++){
                        dp[i][j][1]=max(dp[i][j][1],dp[i-1][f][1]+getP(i-1,f+1,j));
                    }
                    dp[i][j][1]=max(dp[i][j][1],dp[i-1][0][0]);
                }
            }
        }
        ll ans=0;
        for(int j=0;j<=n;j++)ans=max(ans,max(dp[n][j][0],dp[n][j][1]));
        return ans;
    }
};


long long max_weights(int N, int M, vector<int> X, vector<int> Y,vector<int> W) {
    // assert(N<=300);
    n=N;
    int MX=0;
    bool sub=1;
    for(int i=0;i<M;i++){
        X[i]++;
        Y[i]++;
        y[X[i]].pb({Y[i],i});
        vec[Y[i]].pb({X[i],W[i]});
        sub&=(X[i]%2==1);
        MX=max(MX,X[i]);
    }
    if(sub){
        ll ans=0;
        for(int i=0;i<M;i++)ans+=W[i];
        return ans;
    }
    if(MX<=2){
        if(N==2){
            ll f=0,f1=0;
            for(int i=0;i<M;i++){
                if(X[i]%2)f+=W[i];
                else f1+=W[i];
            }
            return max(f,f1);
        }
        ll sum=0;
        for(int i=0;i<M;i++){
            if(X[i]%2==0)sum+=W[i];
        }
        ll ans=sum;
        for(int i=1;i<=N;i++){
            for(auto [x,w]:vec[i]){
                if(x%2==1)sum+=w;
                else sum-=w;
            }
            ans=max(ans,sum);
        }
        return ans;
    }
    for(int i=1;i<=N;i++){
        if(y[i].empty())continue;
        sort(all(y[i]));
        p[i].pb(W[y[i][0].S]);
        for(int j=1;j<sz(y[i]);j++){
            p[i].pb(p[i].back()+W[y[i][j].S]);
        }
    }
    if(N<=300){
        w.resize(N+10);
        for(int i=1;i<=n;i++){
            w[i].resize(n+10);
            for(int j=1;j<=n;j++){
                w[i][j]=0;
            }
            for(auto [pos,num]:y[i])w[i][pos]=W[num];
        }
        t300 FFF;
        return FFF.solve300();
    }
    can[0].pb(0);
    can[N+1].pb(0);
    for(int i=1;i<=N;i++){
        can[i].pb(0);
        if(i>0){
            for(auto [x,b]:y[i-1])can[i].pb(x);
        }
        if(i+1<=N){
            for(auto [x,b]:y[i+1])can[i].pb(x);
        }
        sort(all(can[i]));
        can[i].erase(unique(all(can[i])),can[i].end());
    }
    for(int i=1;i<=N+1;i++){
        dp[i].resize(sz(can[i]));
        for(int j=0;j<sz(dp[i]);j++){
            dp[i][j].resize(sz(can[i-1]));
            for(int k=0;k<sz(can[i-1]);k++){
                dp[i][j][k]=0;
            }
        }
    }
    for(int i=0;i<N;i++){
        sumF[i].resize(sz(can[i]));
        for(int j=0;j<sz(can[i]);j++){
            sumF[i][j].resize(sz(can[i+1]));
            for(int k=0;k<sz(can[i+1]);k++){
                sumF[i][j][k]=getSum(i+1,can[i+1][k]+1,can[i][j]);
            }
        }
    }
    for(int i=1;i<=N+1;i++){
        sumB[i].resize(sz(can[i]));
        for(int j=0;j<sz(can[i]);j++){
            sumB[i][j].resize(sz(can[i-1]));
            for(int k=0;k<sz(can[i-1]);k++){
                sumB[i][j][k]=getSum(i-1,can[i-1][k]+1,can[i][j]);
            }
        }
    }
    for(int i=1;i<=N;i++){
        for(int j=0;j<sz(can[i]);j++){
            for(int k=0;k<sz(can[i-1]);k++){
                for(int f=0;f<sz(can[i+1]);f++){
                    ll nxt=dp[i][j][k];
                    {
                        nxt+=max(sumF[i-1][k][j],sumB[i+1][f][j]);
                    }
                    dp[i+1][f][j]=max(dp[i+1][f][j],nxt);
                }
            }
        }
    }
    ll ans=0;
    for(int j=0;j<sz(can[N]);j++)ans=max(ans,dp[N+1][0][j]);
    return ans;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 40656 KB Output is correct
2 Correct 41 ms 41664 KB Output is correct
3 Correct 15 ms 34652 KB Output is correct
4 Correct 20 ms 34608 KB Output is correct
5 Correct 101 ms 51364 KB Output is correct
6 Correct 119 ms 53732 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 34652 KB Output is correct
2 Correct 67 ms 44296 KB Output is correct
3 Correct 69 ms 45668 KB Output is correct
4 Correct 39 ms 40644 KB Output is correct
5 Correct 43 ms 41668 KB Output is correct
6 Correct 15 ms 34652 KB Output is correct
7 Correct 15 ms 34796 KB Output is correct
8 Correct 16 ms 34648 KB Output is correct
9 Correct 15 ms 34588 KB Output is correct
10 Correct 16 ms 34652 KB Output is correct
11 Correct 16 ms 34740 KB Output is correct
12 Correct 39 ms 40648 KB Output is correct
13 Correct 42 ms 41772 KB Output is correct
14 Correct 39 ms 40508 KB Output is correct
15 Correct 46 ms 39752 KB Output is correct
16 Correct 41 ms 40512 KB Output is correct
17 Correct 39 ms 41160 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 34648 KB Output is correct
2 Correct 51 ms 56656 KB Output is correct
3 Correct 80 ms 71116 KB Output is correct
4 Correct 70 ms 68044 KB Output is correct
5 Correct 121 ms 86468 KB Output is correct
6 Correct 112 ms 86452 KB Output is correct
7 Correct 105 ms 86468 KB Output is correct
8 Correct 108 ms 86396 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 34652 KB Output is correct
2 Correct 15 ms 34652 KB Output is correct
3 Correct 15 ms 34648 KB Output is correct
4 Correct 15 ms 34652 KB Output is correct
5 Correct 16 ms 34812 KB Output is correct
6 Correct 15 ms 34652 KB Output is correct
7 Correct 15 ms 34816 KB Output is correct
8 Incorrect 15 ms 34744 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 34652 KB Output is correct
2 Correct 15 ms 34652 KB Output is correct
3 Correct 15 ms 34648 KB Output is correct
4 Correct 15 ms 34652 KB Output is correct
5 Correct 16 ms 34812 KB Output is correct
6 Correct 15 ms 34652 KB Output is correct
7 Correct 15 ms 34816 KB Output is correct
8 Incorrect 15 ms 34744 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 34652 KB Output is correct
2 Correct 15 ms 34652 KB Output is correct
3 Correct 15 ms 34648 KB Output is correct
4 Correct 15 ms 34652 KB Output is correct
5 Correct 16 ms 34812 KB Output is correct
6 Correct 15 ms 34652 KB Output is correct
7 Correct 15 ms 34816 KB Output is correct
8 Incorrect 15 ms 34744 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 34648 KB Output is correct
2 Correct 51 ms 56656 KB Output is correct
3 Correct 80 ms 71116 KB Output is correct
4 Correct 70 ms 68044 KB Output is correct
5 Correct 121 ms 86468 KB Output is correct
6 Correct 112 ms 86452 KB Output is correct
7 Correct 105 ms 86468 KB Output is correct
8 Correct 108 ms 86396 KB Output is correct
9 Correct 174 ms 102736 KB Output is correct
10 Correct 93 ms 71492 KB Output is correct
11 Correct 180 ms 108604 KB Output is correct
12 Correct 15 ms 34648 KB Output is correct
13 Correct 15 ms 34652 KB Output is correct
14 Correct 16 ms 34652 KB Output is correct
15 Correct 15 ms 34652 KB Output is correct
16 Correct 15 ms 34652 KB Output is correct
17 Incorrect 15 ms 34652 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
18 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 40656 KB Output is correct
2 Correct 41 ms 41664 KB Output is correct
3 Correct 15 ms 34652 KB Output is correct
4 Correct 20 ms 34608 KB Output is correct
5 Correct 101 ms 51364 KB Output is correct
6 Correct 119 ms 53732 KB Output is correct
7 Correct 15 ms 34652 KB Output is correct
8 Correct 67 ms 44296 KB Output is correct
9 Correct 69 ms 45668 KB Output is correct
10 Correct 39 ms 40644 KB Output is correct
11 Correct 43 ms 41668 KB Output is correct
12 Correct 15 ms 34652 KB Output is correct
13 Correct 15 ms 34796 KB Output is correct
14 Correct 16 ms 34648 KB Output is correct
15 Correct 15 ms 34588 KB Output is correct
16 Correct 16 ms 34652 KB Output is correct
17 Correct 16 ms 34740 KB Output is correct
18 Correct 39 ms 40648 KB Output is correct
19 Correct 42 ms 41772 KB Output is correct
20 Correct 39 ms 40508 KB Output is correct
21 Correct 46 ms 39752 KB Output is correct
22 Correct 41 ms 40512 KB Output is correct
23 Correct 39 ms 41160 KB Output is correct
24 Correct 17 ms 34648 KB Output is correct
25 Correct 51 ms 56656 KB Output is correct
26 Correct 80 ms 71116 KB Output is correct
27 Correct 70 ms 68044 KB Output is correct
28 Correct 121 ms 86468 KB Output is correct
29 Correct 112 ms 86452 KB Output is correct
30 Correct 105 ms 86468 KB Output is correct
31 Correct 108 ms 86396 KB Output is correct
32 Correct 17 ms 34652 KB Output is correct
33 Correct 15 ms 34652 KB Output is correct
34 Correct 15 ms 34648 KB Output is correct
35 Correct 15 ms 34652 KB Output is correct
36 Correct 16 ms 34812 KB Output is correct
37 Correct 15 ms 34652 KB Output is correct
38 Correct 15 ms 34816 KB Output is correct
39 Incorrect 15 ms 34744 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
40 Halted 0 ms 0 KB -