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답안 #1046749

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1046749 2024-08-06T21:31:13 Z Trent 메기 농장 (IOI22_fish) C++17
64 / 100
 1000 ms 251172 KB 
#include "fish.h"
#include "bits/stdc++.h";
using namespace std;
#define forR(i, x) for(int i = 0; i < (x); ++i)
#define REP(i, a, b) for(int i = (a); i < (b); ++i)
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<int> vi;
typedef vector<vi> vvi;
struct pii{int a, b;};

ll INF = 1e16;

ll rSum(int i, vector<pii>& wx, vll& psa) {
  int ind = upper_bound(all(wx), i, [](int a, pii b){return a < b.a;}) - wx.begin();
  if(ind - 1 == -1) return 0;
  return psa[ind-1];
}

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
  vector<vector<pii>> wx(N);
  forR(i, M) wx[X[i]].push_back({Y[i], W[i]});
  forR(i, N) sort(all(wx[i]), [](pii a, pii b){return a.a < b.a;});
  vvll wpsa(N);
  forR(i, N) if(!wx[i].empty()) {
    wpsa[i].push_back(wx[i][0].b);
    REP(j, 1, wx[i].size()) wpsa[i].push_back(wx[i][j].b + wpsa[i].back());
  }

  vector<set<int>> sidPos(N), sePos(N);
  forR(i, M) {
    if(X[i] > 0) sidPos[X[i]-1].insert(Y[i] + 1);
    if(X[i] + 1 < N) sidPos[X[i] + 1].insert(Y[i] + 1);
    if(X[i] > 1) sidPos[X[i]-2].insert(Y[i] + 1);
    if(X[i] + 2 < N) sidPos[X[i] + 2].insert(Y[i] + 1);
    sidPos[X[i]].insert(Y[i]+1);

    if(X[i] > 0) sePos[X[i]-1].insert(Y[i] + 1);
    if(X[i] + 1 < N) sePos[X[i] + 1].insert(Y[i] + 1);
    if(X[i] > 1) sePos[X[i]-2].insert(Y[i] + 1);
    if(X[i] + 2 < N) sePos[X[i] + 2].insert(Y[i] + 1);
    sePos[X[i]].insert(Y[i]+1);
  }
  forR(i, N) {
    sidPos[i].insert(0);
    sePos[i].insert(0);
  }
  vector<vi> idPos(N), ePos(N);
  forR(i, N) {
    for(int j : sidPos[i]) idPos[i].push_back(j);
    for(int j : sePos[i]) ePos[i].push_back(j);
  }
  vvll I(N), D(N), E(N);
  forR(i, N) I[i].resize(idPos[i].size()), D[i].resize(idPos[i].size()), E[i].resize(ePos[i].size());
  // h = HEIGHT, not the index of last element!
  forR(i, N) {
    ll besIE = -INF, besII = -INF;
    if(i > 0) {
      forR(ki, ePos[i-1].size()) {
        int k = ePos[i-1][ki];
        besIE = max(besIE, E[i-1][ki] - rSum(k-1, wx[i-1], wpsa[i-1]));
      }
    }
    int api = 0;
    forR(hi, idPos[i].size()) {
      int h = idPos[i][hi];
      if(h > 0) {
        if(i == 0) I[i][hi] = 0;
        else {
          I[i][hi] = max(I[i][hi], besIE + rSum(h-1, wx[i-1], wpsa[i-1]));
          while(api < idPos[i-1].size() && idPos[i-1][api] <= h) {
            int k = idPos[i-1][api];
            besII = max(besII, I[i-1][api] - rSum(k-1, wx[i-1], wpsa[i-1]));
            ++api;
          }
          I[i][hi] = max(I[i][hi], besII + rSum(h-1, wx[i-1], wpsa[i-1]));
        }
      }
    }

    api = (int) idPos[i-1].size() - 1;
    ll besD = -INF;
    for(int hi = (int) idPos[i].size() - 1; hi >= 0; --hi){
      int h = idPos[i][hi];
      if(h > 0) {
        if(i == 0) D[i][hi] = 0;
        else {
          while(api >= 0 && idPos[i-1][api] >= h + 1) {
            int k = idPos[i-1][api];
            besD = max(besD, max(I[i-1][api], D[i-1][api]) + rSum(k-1, wx[i], wpsa[i]));
            --api;
          }
          D[i][hi] = max(D[i][hi], besD - rSum(h-1, wx[i], wpsa[i]));
        }
      }
    }

    ll besE = -INF;
    if(i > 0) {
      forR(yi, ePos[i-1].size()) besE = max(besE, E[i-1][yi]);
    }
    forR(hi, ePos[i].size()){
      int h = ePos[i][hi];
      if(i == 0) E[i][hi] = 0;
      else {
        int pInd = lower_bound(all(idPos[i-1]), h) - idPos[i-1].begin();
        if(idPos[i-1][pInd] == h) {
          ll tot = max(I[i-1][pInd], D[i-1][pInd]) + rSum(h-1, wx[i], wpsa[i]);
          E[i][hi] = max(E[i][hi], max(tot, besE));
        }
      }
    }
  }
  ll mx = 0;
  forR(hi, idPos[N-1].size()) mx = max(mx, max(I[N-1][hi], D[N-1][hi]));
  forR(hi, ePos[N-1].size()) mx = max(mx, E[N-1][hi]);
  return mx;
}

Compilation message

fish.cpp:2:25: warning: extra tokens at end of #include directive
    2 | #include "bits/stdc++.h";
      |                         ^
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:5:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<pii>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define REP(i, a, b) for(int i = (a); i < (b); ++i)
      |                                         ^
fish.cpp:30:5: note: in expansion of macro 'REP'
   30 |     REP(j, 1, wx[i].size()) wpsa[i].push_back(wx[i][j].b + wpsa[i].back());
      |     ^~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:62:7: note: in expansion of macro 'forR'
   62 |       forR(ki, ePos[i-1].size()) {
      |       ^~~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:68:5: note: in expansion of macro 'forR'
   68 |     forR(hi, idPos[i].size()) {
      |     ^~~~
fish.cpp:74:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |           while(api < idPos[i-1].size() && idPos[i-1][api] <= h) {
      |                 ~~~~^~~~~~~~~~~~~~~~~~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:103:7: note: in expansion of macro 'forR'
  103 |       forR(yi, ePos[i-1].size()) besE = max(besE, E[i-1][yi]);
      |       ^~~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:105:5: note: in expansion of macro 'forR'
  105 |     forR(hi, ePos[i].size()){
      |     ^~~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:118:3: note: in expansion of macro 'forR'
  118 |   forR(hi, idPos[N-1].size()) mx = max(mx, max(I[N-1][hi], D[N-1][hi]));
      |   ^~~~
fish.cpp:4:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define forR(i, x) for(int i = 0; i < (x); ++i)
      |                                     ^
fish.cpp:119:3: note: in expansion of macro 'forR'
  119 |   forR(hi, ePos[N-1].size()) mx = max(mx, E[N-1][hi]);
      |   ^~~~

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 286 ms 79584 KB Output is correct
2 Correct 376 ms 92696 KB Output is correct
3 Correct 36 ms 51092 KB Output is correct
4 Correct 36 ms 51292 KB Output is correct
5 Execution timed out 1104 ms 251172 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 531 ms 96232 KB Output is correct
3 Correct 650 ms 109116 KB Output is correct
4 Correct 277 ms 79692 KB Output is correct
5 Correct 313 ms 92740 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 35 ms 51256 KB Output is correct
11 Correct 36 ms 51288 KB Output is correct
12 Correct 324 ms 89956 KB Output is correct
13 Correct 402 ms 105288 KB Output is correct
14 Correct 289 ms 84860 KB Output is correct
15 Correct 243 ms 79048 KB Output is correct
16 Correct 273 ms 84924 KB Output is correct
17 Correct 316 ms 94172 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 51320 KB Output is correct
2 Correct 36 ms 51284 KB Output is correct
3 Correct 79 ms 56404 KB Output is correct
4 Correct 60 ms 58964 KB Output is correct
5 Correct 108 ms 69084 KB Output is correct
6 Correct 108 ms 69200 KB Output is correct
7 Correct 100 ms 69200 KB Output is correct
8 Correct 99 ms 69200 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 62 ms 11108 KB Output is correct
18 Correct 48 ms 9808 KB Output is correct
19 Correct 47 ms 10832 KB Output is correct
20 Correct 41 ms 8788 KB Output is correct
21 Correct 41 ms 8560 KB Output is correct
22 Correct 94 ms 16716 KB Output is correct
23 Correct 20 ms 5468 KB Output is correct
24 Correct 47 ms 12120 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 16 ms 4408 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 62 ms 11108 KB Output is correct
18 Correct 48 ms 9808 KB Output is correct
19 Correct 47 ms 10832 KB Output is correct
20 Correct 41 ms 8788 KB Output is correct
21 Correct 41 ms 8560 KB Output is correct
22 Correct 94 ms 16716 KB Output is correct
23 Correct 20 ms 5468 KB Output is correct
24 Correct 47 ms 12120 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 16 ms 4408 KB Output is correct
27 Correct 5 ms 3932 KB Output is correct
28 Correct 399 ms 47036 KB Output is correct
29 Correct 934 ms 96852 KB Output is correct
30 Execution timed out 1042 ms 152948 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 51320 KB Output is correct
2 Correct 36 ms 51284 KB Output is correct
3 Correct 79 ms 56404 KB Output is correct
4 Correct 60 ms 58964 KB Output is correct
5 Correct 108 ms 69084 KB Output is correct
6 Correct 108 ms 69200 KB Output is correct
7 Correct 100 ms 69200 KB Output is correct
8 Correct 99 ms 69200 KB Output is correct
9 Correct 293 ms 119376 KB Output is correct
10 Correct 94 ms 40528 KB Output is correct
11 Correct 184 ms 81008 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 35 ms 51252 KB Output is correct
19 Correct 39 ms 51292 KB Output is correct
20 Correct 36 ms 51280 KB Output is correct
21 Correct 36 ms 51288 KB Output is correct
22 Correct 313 ms 115796 KB Output is correct
23 Correct 375 ms 121172 KB Output is correct
24 Correct 461 ms 132088 KB Output is correct

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 286 ms 79584 KB Output is correct
2 Correct 376 ms 92696 KB Output is correct
3 Correct 36 ms 51092 KB Output is correct
4 Correct 36 ms 51292 KB Output is correct
5 Execution timed out 1104 ms 251172 KB Time limit exceeded
6 Halted 0 ms 0 KB -