oj.uz

Submission #1065904

# Submission time Handle Problem Language Result Execution time Memory
1065904 2024-08-19T12:49:06 Z j_vdd16 Catfish Farm (IOI22_fish) C++17
9 / 100
 1000 ms 57128 KB 
#include "fish.h"

#include <algorithm>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

#define int long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;

vvii fishes;
int weightSum(int x, int y1, int y2) {
    if (x >= fishes.size() || y2 <= y1)
        return 0;

    int res = 0;
    for (auto [y, w] : fishes[x]) {
        if (y1 <= y && y < y2)
            res += w;
    }

    return res;
}

long long max_weights(signed N, signed M, vector<signed> X, std::vector<signed> Y, std::vector<signed> W) {
    fishes = vvii(N);
    loop(i, M) {
        fishes[X[i]].push_back({Y[i], W[i]});
    }
    fishes.push_back({});

    loop(x, N) {
        sort(all(fishes[x]));
    }

    vector<map<int, int>> beforeDp(N);
    vector<map<int, int>> bothDp(N);

    //bestBefore, bestBeforeAndAfter
    loop(x, N) {
        if (x == 0) {
            for (auto [y, w] : fishes[x + 1]) {
                bothDp[0][y + 1] = weightSum(x + 1, 0, y + 1);
            }
            beforeDp[0][0] = 0;

            continue;
        }

        set<int> heights;
        for (auto [y, w] : fishes[x - 1]) {
            heights.insert(y + 1);
        }
        for (auto [y, w] : fishes[x + 1]) {
            heights.insert(y + 1);
        }
        heights.insert(0);

        int bestBefore2 = 0;
        int bestBoth3 = 0;
        if (x >= 2) {
            for (auto [prevY, prevScore] : beforeDp[x - 2])
                bestBefore2 = max(bestBefore2, prevScore);
        }
        if (x >= 3) {
            for (auto [prevY, prevScore] : bothDp[x - 3])
                bestBoth3 = max(bestBoth3, prevScore);
        }

        for (int height : heights) {
            int& both = bothDp[x][height];
            int& before = beforeDp[x][height];

            int nextWeight = weightSum(x + 1, 0, height);
            for (auto [prevHeight, prevScore] : beforeDp[x - 1]) {
                int prevCur = weightSum(x - 1, prevHeight, height);

                both = max(both, prevScore + prevCur + nextWeight);
                before = max(before, prevScore + prevCur);
            }
            // for (auto [prevY, prevScore] : bothDp[x - 1]) {
            //     int prevCur = weightSum(x - 1, prevY, height) - weightSum(x, 0, min(prevY, height));

            //     both = max(both, prevScore + prevCur + nextWeight);
            //     before = max(before, prevScore + prevCur);
            // }

            both = max(both, bestBefore2 + weightSum(x - 1, 0, height) + nextWeight);
            both = max(both, bestBoth3 + weightSum(x - 1, 0, height) + nextWeight);

            before = max(before, bestBefore2 + weightSum(x - 1, 0, height));
            before = max(before, bestBoth3 + weightSum(x - 1, 0, height));
        }
    }

    int res = 0;
    loop(x, N) {
        for (auto [y, score] : beforeDp[x]) {
            res = max(res, score);
        }
        for (auto [y, score] : bothDp[x]) {
            res = max(res, score);
        }
    }

    return res;
}

Compilation message

fish.cpp: In function 'long long int weightSum(long long int, long long int, long long int)':
fish.cpp:35:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     if (x >= fishes.size() || y2 <= y1)
      |         ~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1060 ms 19840 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Execution timed out 1085 ms 21396 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 24624 KB Output is correct
2 Correct 21 ms 25984 KB Output is correct
3 Correct 45 ms 34940 KB Output is correct
4 Correct 40 ms 33832 KB Output is correct
5 Correct 80 ms 45220 KB Output is correct
6 Correct 66 ms 45100 KB Output is correct
7 Correct 69 ms 45764 KB Output is correct
8 Correct 72 ms 45956 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 348 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 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 348 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 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 348 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 21 ms 24624 KB Output is correct
2 Correct 21 ms 25984 KB Output is correct
3 Correct 45 ms 34940 KB Output is correct
4 Correct 40 ms 33832 KB Output is correct
5 Correct 80 ms 45220 KB Output is correct
6 Correct 66 ms 45100 KB Output is correct
7 Correct 69 ms 45764 KB Output is correct
8 Correct 72 ms 45956 KB Output is correct
9 Correct 85 ms 57128 KB Output is correct
10 Incorrect 56 ms 31680 KB 1st lines differ - on the 1st token, expected: '36454348383152', found: '36364983059693'
11 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1060 ms 19840 KB Time limit exceeded
2 Halted 0 ms 0 KB -