oj.uz

Submission #1070790

# Submission time Handle Problem Language Result Execution time Memory
1070790 2024-08-22T18:33:21 Z beaconmc Catfish Farm (IOI22_fish) C++17
50 / 100
 1000 ms 404296 KB 
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include "fish.h"

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)

const ll maxn = 100005;


set<ll> heights[maxn];
vector<ll> realheights[maxn];

unordered_map<ll,ll> fish[maxn];
unordered_map<ll,ll> weights[maxn];

unordered_map<ll,ll> p[maxn];

vector<array<ll,2>>  dp[maxn];

unordered_map<ll,ll> pref[maxn][2];
unordered_map<ll,ll> pref2[maxn][2];
unordered_map<ll,ll> suff[maxn][2];


long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {

    FOR(i,0,M){
        Y[i]++;
        fish[X[i]][Y[i]] = 1;
        weights[X[i]][Y[i]] = W[i];

        if (X[i] > 0) heights[X[i]-1].insert(Y[i]);
        if (X[i] > 1) heights[X[i]-2].insert(Y[i]);
        heights[X[i]].insert(Y[i]);
        heights[X[i]+1].insert(Y[i]);
        heights[X[i]+2].insert(Y[i]);
    }
    FOR(i,0,maxn) heights[i].insert(0);

    FOR(i,0,maxn) heights[i].insert(maxn);

    FOR(i,0,maxn){
        p[i][0] = 0;
        ll prev = 0;
        for (auto j : heights[i]){
            if (j==0) continue;
            p[i][j] = p[i][prev] + weights[i][j];
            prev = j;
        }
    }
    FOR(i,0,maxn){
        for (auto k : heights[i]) realheights[i].push_back(k);
    }
    FOR(i,0,maxn){
        dp[i].resize(heights[i].size());
    }

    FOR(i,1,N+1){
        FOR(X,0,dp[i].size()){
            ll j = realheights[i][X];
            FOR(k,0,2){


                if (i<2) continue;
                ll temp = 0;
                ll add = 0;
                if (k==0){
                    if (X==dp[i].size()-1) continue;
                    ll up = *upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]);
                    ll down = *(--upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]));
                    temp = max(temp, suff[i-1][0][up] - p[i-1][down]);
                    temp = max(temp, suff[i-1][1][up] - p[i-1][down]);

                    // FOR(p,j+1,N+1){
                    //     if (fish[i-1][p]) add += weights[i-1][p];
                    //     temp = max(temp, dp[i-1][p][0] + add);
                    //     temp = max(temp, dp[i-1][p][1] + add);
                    // }
                }else{
                    ll down = *(--upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]));
                    ll down2 = *(--upper_bound(realheights[i-2].begin(), realheights[i-2].end(), realheights[i][X]));

                    temp = max(temp, pref[i-1][0][down]);
                    temp = max(temp, pref[i-1][1][down] + p[i-2][down2]);

                    // FOR(p,0,j+1) if (fish[i-2][p]) add += weights[i-2][p];
                    // FOR(p,0,j+1){
                    //     if (fish[i-2][p]) add -= weights[i-2][p];
                    //     temp = max(temp, dp[i-1][p][0]);
                    //     temp = max(temp, dp[i-1][p][1] + add);
                    // }
                }


                dp[i][X][k] = temp;
            }
        }
        ll sz = realheights[i].size();

        FOR(k,0,2){
            ll tempadd = 0;
            ll tempadd2 = 0;


            FOR(j,0,sz){
                tempadd += weights[i][realheights[i][j]];
                suff[i][k][realheights[i][j]] = dp[i][j][k]+tempadd;
            }

            FOR(j,0,sz){
                tempadd2 -= weights[i-1][realheights[i][j]];
                pref[i][k][realheights[i][j]] = dp[i][j][k] + tempadd2;
                pref2[i][k][realheights[i][j]] = dp[i][j][k];
            }
            ll prev = 0;
            FOR(j,1,sz){
                pref[i][k][realheights[i][j]] = max(pref[i][k][realheights[i][j]], pref[i][k][prev]);
                pref2[i][k][realheights[i][j]] = max(pref2[i][k][realheights[i][j]], pref2[i][k][prev]);
                prev = realheights[i][j];
            }
            prev = realheights[i][sz-1];
            FORNEG(j,sz-2,-1){
                suff[i][k][realheights[i][j]] = max(suff[i][k][realheights[i][j]], suff[i][k][prev]);

                prev = realheights[i][j];
            }

        }
        // cout << i << endl;
        // cout << suff[2][2][0] << "FUCK" << endl;

    }


    // cout << dp[3][2][0] << endl;



    ll ans = 0;

    FOR(i,0,N+1){
        FOR(j,0,dp[i].size()){
            ans = max(dp[i][j][0], ans);
            ans = max(dp[i][j][1], ans);
        }
    }
    return ans;






}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
   65 |         FOR(X,0,dp[i].size()){
      |             ~~~~~~~~~~~~~~~~     
fish.cpp:65:9: note: in expansion of macro 'FOR'
   65 |         FOR(X,0,dp[i].size()){
      |         ^~~
fish.cpp:74:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |                     if (X==dp[i].size()-1) continue;
      |                         ~^~~~~~~~~~~~~~~~
fish.cpp:72:20: warning: unused variable 'add' [-Wunused-variable]
   72 |                 ll add = 0;
      |                    ^~~
fish.cpp:66:16: warning: unused variable 'j' [-Wunused-variable]
   66 |             ll j = realheights[i][X];
      |                ^
fish.cpp:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
  148 |         FOR(j,0,dp[i].size()){
      |             ~~~~~~~~~~~~~~~~     
fish.cpp:148:9: note: in expansion of macro 'FOR'
  148 |         FOR(j,0,dp[i].size()){
      |         ^~~

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 488 ms 283172 KB Output is correct
2 Correct 708 ms 324600 KB Output is correct
3 Correct 257 ms 214096 KB Output is correct
4 Correct 302 ms 214096 KB Output is correct
5 Execution timed out 1056 ms 346576 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 107604 KB Output is correct
2 Correct 937 ms 338188 KB Output is correct
3 Correct 978 ms 375976 KB Output is correct
4 Correct 484 ms 284528 KB Output is correct
5 Correct 637 ms 324444 KB Output is correct
6 Correct 72 ms 107856 KB Output is correct
7 Correct 84 ms 107604 KB Output is correct
8 Correct 84 ms 107616 KB Output is correct
9 Correct 98 ms 107600 KB Output is correct
10 Correct 300 ms 214100 KB Output is correct
11 Correct 330 ms 214016 KB Output is correct
12 Correct 598 ms 316388 KB Output is correct
13 Correct 806 ms 367416 KB Output is correct
14 Correct 686 ms 300324 KB Output is correct
15 Correct 591 ms 292180 KB Output is correct
16 Correct 695 ms 300504 KB Output is correct
17 Correct 802 ms 336016 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 323 ms 214104 KB Output is correct
2 Correct 305 ms 214100 KB Output is correct
3 Correct 407 ms 232792 KB Output is correct
4 Correct 334 ms 237104 KB Output is correct
5 Correct 503 ms 264972 KB Output is correct
6 Correct 456 ms 264200 KB Output is correct
7 Correct 520 ms 264788 KB Output is correct
8 Correct 554 ms 264840 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 107604 KB Output is correct
2 Correct 101 ms 107600 KB Output is correct
3 Correct 81 ms 107600 KB Output is correct
4 Correct 101 ms 107436 KB Output is correct
5 Correct 75 ms 107604 KB Output is correct
6 Correct 99 ms 107452 KB Output is correct
7 Correct 101 ms 107600 KB Output is correct
8 Correct 78 ms 107472 KB Output is correct
9 Correct 80 ms 107860 KB Output is correct
10 Correct 92 ms 108700 KB Output is correct
11 Correct 88 ms 108136 KB Output is correct
12 Correct 87 ms 108724 KB Output is correct
13 Correct 94 ms 107744 KB Output is correct
14 Correct 93 ms 108332 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 107604 KB Output is correct
2 Correct 101 ms 107600 KB Output is correct
3 Correct 81 ms 107600 KB Output is correct
4 Correct 101 ms 107436 KB Output is correct
5 Correct 75 ms 107604 KB Output is correct
6 Correct 99 ms 107452 KB Output is correct
7 Correct 101 ms 107600 KB Output is correct
8 Correct 78 ms 107472 KB Output is correct
9 Correct 80 ms 107860 KB Output is correct
10 Correct 92 ms 108700 KB Output is correct
11 Correct 88 ms 108136 KB Output is correct
12 Correct 87 ms 108724 KB Output is correct
13 Correct 94 ms 107744 KB Output is correct
14 Correct 93 ms 108332 KB Output is correct
15 Correct 111 ms 108484 KB Output is correct
16 Correct 103 ms 109256 KB Output is correct
17 Correct 245 ms 140112 KB Output is correct
18 Correct 201 ms 134224 KB Output is correct
19 Correct 190 ms 138320 KB Output is correct
20 Correct 184 ms 131156 KB Output is correct
21 Correct 208 ms 130388 KB Output is correct
22 Correct 260 ms 153428 KB Output is correct
23 Correct 150 ms 123796 KB Output is correct
24 Correct 246 ms 144496 KB Output is correct
25 Correct 96 ms 109136 KB Output is correct
26 Correct 140 ms 119892 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 107604 KB Output is correct
2 Correct 101 ms 107600 KB Output is correct
3 Correct 81 ms 107600 KB Output is correct
4 Correct 101 ms 107436 KB Output is correct
5 Correct 75 ms 107604 KB Output is correct
6 Correct 99 ms 107452 KB Output is correct
7 Correct 101 ms 107600 KB Output is correct
8 Correct 78 ms 107472 KB Output is correct
9 Correct 80 ms 107860 KB Output is correct
10 Correct 92 ms 108700 KB Output is correct
11 Correct 88 ms 108136 KB Output is correct
12 Correct 87 ms 108724 KB Output is correct
13 Correct 94 ms 107744 KB Output is correct
14 Correct 93 ms 108332 KB Output is correct
15 Correct 111 ms 108484 KB Output is correct
16 Correct 103 ms 109256 KB Output is correct
17 Correct 245 ms 140112 KB Output is correct
18 Correct 201 ms 134224 KB Output is correct
19 Correct 190 ms 138320 KB Output is correct
20 Correct 184 ms 131156 KB Output is correct
21 Correct 208 ms 130388 KB Output is correct
22 Correct 260 ms 153428 KB Output is correct
23 Correct 150 ms 123796 KB Output is correct
24 Correct 246 ms 144496 KB Output is correct
25 Correct 96 ms 109136 KB Output is correct
26 Correct 140 ms 119892 KB Output is correct
27 Correct 104 ms 116052 KB Output is correct
28 Correct 790 ms 238928 KB Output is correct
29 Execution timed out 1065 ms 339132 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 323 ms 214104 KB Output is correct
2 Correct 305 ms 214100 KB Output is correct
3 Correct 407 ms 232792 KB Output is correct
4 Correct 334 ms 237104 KB Output is correct
5 Correct 503 ms 264972 KB Output is correct
6 Correct 456 ms 264200 KB Output is correct
7 Correct 520 ms 264788 KB Output is correct
8 Correct 554 ms 264840 KB Output is correct
9 Correct 898 ms 396116 KB Output is correct
10 Correct 393 ms 205536 KB Output is correct
11 Correct 685 ms 303520 KB Output is correct
12 Correct 82 ms 107648 KB Output is correct
13 Correct 78 ms 107600 KB Output is correct
14 Correct 90 ms 107536 KB Output is correct
15 Correct 84 ms 107600 KB Output is correct
16 Correct 97 ms 107600 KB Output is correct
17 Correct 93 ms 107464 KB Output is correct
18 Correct 266 ms 214100 KB Output is correct
19 Correct 279 ms 214064 KB Output is correct
20 Correct 345 ms 213896 KB Output is correct
21 Correct 256 ms 214100 KB Output is correct
22 Correct 871 ms 393804 KB Output is correct
23 Execution timed out 1048 ms 404296 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 488 ms 283172 KB Output is correct
2 Correct 708 ms 324600 KB Output is correct
3 Correct 257 ms 214096 KB Output is correct
4 Correct 302 ms 214096 KB Output is correct
5 Execution timed out 1056 ms 346576 KB Time limit exceeded
6 Halted 0 ms 0 KB -