oj.uz

Submission #837876

# Submission time Handle Problem Language Result Execution time Memory
837876 2023-08-25T19:23:47 Z Dremix10 Catfish Farm (IOI22_fish) C++17
58 / 100
 1000 ms 32376 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pl;
#define F first
#define S second
#define all(x) (x).begin(),(x).end()
const int N = 3e5+5;
const int MOD = 1e9+7;
const ll INF = 1e18+5;
#ifdef dremix
    #define p(x) cerr<<#x<<" = "<<x<<endl;
    #define pv(x) cerr<<#x<<" = {";for(auto v : x)cerr<<v<<", ";cerr<<"}"<<endl;
#else
    #define p(x) {}
    #define pv(x) {}
#endif



long long max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) {
    /// pier optimal options are below each fish in each column or full column
    /// dp[i][j][k], I am at column i with the following status:
    /// at column (i-1) the pier was built below fish j and above that the fish caught were k

    int i,j,k;

    vector<vector<pi> > col(n,vector<pi>());
    //p(1)
    for(i=0;i<m;i++){
        col[x[i]].push_back({y[i],w[i]});
    }

    for(i=0;i<n;i++){
        sort(all(col[i]));
    }

    vector<vector<ll> > best(n,vector<ll>()),eaten(n,vector<ll>());
    vector<ll> ans(n,-INF);
    //p(2)

    for(i=0;i<n;i++){
        //p(i) 
        int sz = col[i].size();
        best[i].assign(sz+1,-INF);
        eaten[i].assign(sz+1,-INF);
            
    }

    /// starting at i = 0 (base case)

    int sz = col[0].size();
    //p(3)
    ans[0] = 0;
    for(j=0;j<=sz;j++){

        best[0][j] = 0;
        eaten[0][j] = 0;
    }
    //p(4)
    p("go")
    for(i=1;i<n;i++){
        /// at column i with sz fish
        int sz = col[i].size();
        int sz1 = col[i-1].size();
        
        ll tot = 0;
        int p1 = 0;
        ans[i] = max(ans[i],ans[i-1]);

        for(j=0;j<sz;j++){
            p(j)
            int h = col[i][j].F-1;
            /// build pier up to h

            /// 2 cases: 

            /// (i-1) catches my fish

            int idx = j;
            ll sum = 0;
            best[i][j] = max(best[i][j],ans[i-1]);
            eaten[i][j] = max(eaten[i][j],ans[i-1]);
            

            for(k=0;k<sz1;k++){
                while(idx < sz && col[i][idx].F <= col[i-1][k].F-1){
                    sum += col[i][idx].S;
                    idx++;
                }
                ll temp = best[i-1][k] + sum;
                //p(temp)
                best[i][j] = max(best[i][j],temp);
                eaten[i][idx] = max(eaten[i][idx],temp);
                ans[i] = max(ans[i],temp);
            }

            /// case of full col
            while(idx < sz){
                sum += col[i][idx].S;
                idx++;
            }
            ll temp = best[i-1][k] + sum;
            best[i][j] = max(best[i][j],temp);
            eaten[i][idx] = max(eaten[i][idx],temp);
            ans[i] = max(ans[i],temp);


            /// I catch fish from (i-1)
            while(p1 < sz1 && col[i-1][p1].F <= h){
                tot += col[i-1][p1].S;
                p1++;
            }

            // I can get up to fish (p1-1)
            ll temp2 = tot;
            //p(j)

            for(k=0;k<p1;k++){
                /// I will get fish from {k,p1-1} (temp)

                /// i need best dp[i-1][o][oo] with o+oo == k
                //p(k)
                //p(temp2)
                ll temp = eaten[i-1][k] + temp2;
                //p(temp)
                best[i][j] = max(best[i][j],temp);
                eaten[i][j] = max(eaten[i][j],temp);
                ans[i] = max(ans[i],temp);

                temp2 -= col[i-1][k].S;
            }

        }

        /// case of full col
            
            /// build pier up to h
            best[i][j] = max(best[i][j],ans[i-1]);
            eaten[i][j] = max(eaten[i][j],ans[i-1]);
            /// 2 cases
            /// I catch fish from (i-1)
            while(p1 < sz1){
                tot += col[i-1][p1].S;
                p1++;
            }

            // I can get up to fish (p1-1)
            ll temp2 = tot;
            //p(temp2)
            //p(p1)
            for(k=0;k<p1;k++){
                /// I will get fish from {k,p1-1} (temp)

                /// i need best dp[i-1][o][oo] with o+oo == k
                
                ll temp = eaten[i-1][k] + temp2;
                //p(temp)
                best[i][j] = max(best[i][j],temp);
                eaten[i][j] = max(eaten[i][j],temp);
                ans[i] = max(ans[i],temp);

                temp2 -= col[i-1][k].S;
            }
        pv(best[i])
        pv(eaten[i])

    }

    // from last col
    pv(ans)

    return ans[n-1];
}

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 18076 KB Output is correct
2 Correct 44 ms 18996 KB Output is correct
3 Correct 13 ms 14292 KB Output is correct
4 Correct 13 ms 14324 KB Output is correct
5 Execution timed out 1069 ms 32376 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1069 ms 23360 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14292 KB Output is correct
2 Correct 13 ms 14292 KB Output is correct
3 Correct 29 ms 15828 KB Output is correct
4 Correct 33 ms 16960 KB Output is correct
5 Correct 47 ms 21452 KB Output is correct
6 Correct 53 ms 20952 KB Output is correct
7 Correct 48 ms 21324 KB Output is correct
8 Correct 48 ms 21416 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 436 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 436 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 56 ms 3348 KB Output is correct
18 Correct 64 ms 3572 KB Output is correct
19 Correct 38 ms 3532 KB Output is correct
20 Correct 39 ms 3540 KB Output is correct
21 Correct 38 ms 3504 KB Output is correct
22 Correct 128 ms 6712 KB Output is correct
23 Correct 5 ms 852 KB Output is correct
24 Correct 22 ms 2300 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 4 ms 900 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 436 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 56 ms 3348 KB Output is correct
18 Correct 64 ms 3572 KB Output is correct
19 Correct 38 ms 3532 KB Output is correct
20 Correct 39 ms 3540 KB Output is correct
21 Correct 38 ms 3504 KB Output is correct
22 Correct 128 ms 6712 KB Output is correct
23 Correct 5 ms 852 KB Output is correct
24 Correct 22 ms 2300 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 4 ms 900 KB Output is correct
27 Correct 2 ms 880 KB Output is correct
28 Correct 572 ms 15724 KB Output is correct
29 Execution timed out 1082 ms 21588 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14292 KB Output is correct
2 Correct 13 ms 14292 KB Output is correct
3 Correct 29 ms 15828 KB Output is correct
4 Correct 33 ms 16960 KB Output is correct
5 Correct 47 ms 21452 KB Output is correct
6 Correct 53 ms 20952 KB Output is correct
7 Correct 48 ms 21324 KB Output is correct
8 Correct 48 ms 21416 KB Output is correct
9 Correct 45 ms 19788 KB Output is correct
10 Correct 37 ms 11152 KB Output is correct
11 Correct 80 ms 22116 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 12 ms 14336 KB Output is correct
19 Correct 13 ms 14372 KB Output is correct
20 Correct 13 ms 14300 KB Output is correct
21 Correct 13 ms 14292 KB Output is correct
22 Correct 49 ms 18760 KB Output is correct
23 Correct 78 ms 22152 KB Output is correct
24 Correct 78 ms 22104 KB Output is correct

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 18076 KB Output is correct
2 Correct 44 ms 18996 KB Output is correct
3 Correct 13 ms 14292 KB Output is correct
4 Correct 13 ms 14324 KB Output is correct
5 Execution timed out 1069 ms 32376 KB Time limit exceeded
6 Halted 0 ms 0 KB -