oj.uz

Submission #626351

# Submission time Handle Problem Language Result Execution time Memory
626351 2022-08-11T12:01:04 Z boris_mihov Catfish Farm (IOI22_fish) C++17
9 / 100
 94 ms 10872 KB 
#include "fish.h"
#include <algorithm>
#include <iostream>
#include <cassert>
#include <numeric>
#include <vector>

typedef long long llong;
const int MAXM = 300000 + 10;
const int MAXN = 3000 + 10;
const int INF  = 1e9;

int n, m;
struct Fish
{
    int x, y, w;
    inline friend bool operator < (const Fish &a, const Fish &b)
    {
        return a.x < b.x || (a.x == b.x && a.y < b.y);
    }

} fish[MAXM];

llong solveOdd()
{
    llong ans = 0;
    for (int i = 1 ; i <= m ; ++i)
    {
        ans += fish[i].w;
    }

    return ans;
}

llong solveX12()
{
    llong sum[2];
    sum[0] = sum[1] = 0;
    for (int i = 1 ; i <= m ; ++i)
    {
        --fish[i].x;
        sum[fish[i].x] += fish[i].w; 
    }

    if (n == 2)
    {
        return std::max(sum[0], sum[1]);
    }
    std::sort(fish+1, fish+1+m);
    int ptr0 = 1;
    int ptr1 = 1;
    
    while (ptr1 <= m && fish[ptr1].x == 0) ptr1++;
    if (ptr1 == m+1) return sum[0];
    
    sum[0] = 0;
    llong ans = sum[1];
    
    while (ptr0 <= m && fish[ptr0].x == 0)
    {
        sum[0] += fish[ptr0].w;
        while (ptr1 <= m && fish[ptr1].y <= fish[ptr0].y)
        {
            sum[1] -= fish[ptr1].w;
            ++ptr1;
        }

        ans = std::max(ans, sum[0] + sum[1]);
        ptr0++;
    }

    return ans;
}

llong dp2[MAXM];
llong solveY1()
{
    llong ans = 0;
    std::sort(fish+1, fish+1+m);
    
    for (int i = 1 ; i <= m ; ++i)
    {
        if (fish[i].x != fish[i-1].x + 1) dp2[i] = fish[i].w + dp2[i-1];
        else dp2[i] = std::max(dp2[i-2] + fish[i].w, dp2[i-1]);
    }
    return dp2[m];
}

llong solveNSmall()
{
    llong ans = 0;
    return ans;
}

llong max_weights(int N, int M, std::vector <int> X, std::vector <int> Y, std::vector <int> W) 
{
    n = N;
    m = M;
    bool isOdd = true;
    bool isX01 = true;
    bool isY0 = true;

    for (int i = 1 ; i <= m ; ++i)    
    {
        ++X[i-1];
        ++Y[i-1];
        fish[i].x = X[i-1];
        fish[i].y = Y[i-1];
        fish[i].w = W[i-1];
        isOdd &= (fish[i].x &1);
        isX01 &= (fish[i].x <= 2);
        isY0 &= (fish[i].y == 1);
    }
    
    if (isOdd) return solveOdd();
    if (isX01) return solveX12();
    if (isY0) return solveY1();
    return solveNSmall();
}

Compilation message

fish.cpp: In function 'llong solveY1()':
fish.cpp:78:11: warning: unused variable 'ans' [-Wunused-variable]
   78 |     llong ans = 0;
      |           ^~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 3020 KB Output is correct
2 Correct 32 ms 3784 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 88 ms 10744 KB Output is correct
6 Correct 94 ms 10872 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 63 ms 5936 KB Output is correct
3 Correct 90 ms 7244 KB Output is correct
4 Correct 23 ms 3056 KB Output is correct
5 Correct 28 ms 3776 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 29 ms 3056 KB Output is correct
13 Correct 36 ms 3792 KB Output is correct
14 Correct 32 ms 3064 KB Output is correct
15 Correct 34 ms 3412 KB Output is correct
16 Correct 31 ms 3064 KB Output is correct
17 Correct 33 ms 3416 KB Output is correct

Subtask #3
0 / 9.0

# 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 Incorrect 19 ms 2616 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #7
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 Incorrect 19 ms 2616 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 3020 KB Output is correct
2 Correct 32 ms 3784 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 88 ms 10744 KB Output is correct
6 Correct 94 ms 10872 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 63 ms 5936 KB Output is correct
9 Correct 90 ms 7244 KB Output is correct
10 Correct 23 ms 3056 KB Output is correct
11 Correct 28 ms 3776 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 29 ms 3056 KB Output is correct
19 Correct 36 ms 3792 KB Output is correct
20 Correct 32 ms 3064 KB Output is correct
21 Correct 34 ms 3412 KB Output is correct
22 Correct 31 ms 3064 KB Output is correct
23 Correct 33 ms 3416 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Incorrect 19 ms 2616 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
27 Halted 0 ms 0 KB -