oj.uz

답안 #626353

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
626353 2022-08-11T12:01:45 Z boris_mihov 메기 농장 (IOI22_fish) C++17
9 / 100
 90 ms 10864 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);
    fish[0].x = -1;
    
    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

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 3020 KB Output is correct
2 Correct 29 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 89 ms 10856 KB Output is correct
6 Correct 90 ms 10864 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 64 ms 6016 KB Output is correct
3 Correct 76 ms 7264 KB Output is correct
4 Correct 24 ms 3044 KB Output is correct
5 Correct 29 ms 3828 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 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 29 ms 3156 KB Output is correct
13 Correct 35 ms 3784 KB Output is correct
14 Correct 32 ms 3148 KB Output is correct
15 Correct 35 ms 3428 KB Output is correct
16 Correct 32 ms 3172 KB Output is correct
17 Correct 34 ms 3404 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 18 ms 2516 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 18 ms 2516 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 3020 KB Output is correct
2 Correct 29 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 89 ms 10856 KB Output is correct
6 Correct 90 ms 10864 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 64 ms 6016 KB Output is correct
9 Correct 76 ms 7264 KB Output is correct
10 Correct 24 ms 3044 KB Output is correct
11 Correct 29 ms 3828 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 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 29 ms 3156 KB Output is correct
19 Correct 35 ms 3784 KB Output is correct
20 Correct 32 ms 3148 KB Output is correct
21 Correct 35 ms 3428 KB Output is correct
22 Correct 32 ms 3172 KB Output is correct
23 Correct 34 ms 3404 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Incorrect 18 ms 2516 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
27 Halted 0 ms 0 KB -