Submission #625405

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
625405	2022-08-10 11:28:08	model_code	Catfish Farm (IOI22_fish)	C++17	100 / 100	463 ms	60276 KiB

fish

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#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
  vector<vector<long long>> fishes(N+1);
  vector<vector<int>> states(N+1, {0});
  for (int i = 0; i < M; ++i) {
    ++Y[i];
    for (int j = max(X[i]-1, 0); j <= min(X[i]+1, N-1); ++j) {
      states[j].push_back(Y[i]);
    }
  }
  
  for (int i = 0; i <= N; ++i) {
    sort(states[i].begin(), states[i].end());
    states[i].erase(unique(states[i].begin(), states[i].end()), states[i].end());
    fishes[i].resize(states[i].size());
  }
  for (int i = 0; i < M; ++i) {
    int x = X[i];
    int y = lower_bound(states[x].begin(), states[x].end(), Y[i]) - states[x].begin();
    fishes[x][y] += W[i];
  }
  vector<vector<long long>> dp_up(N+1), dp_down(N+1);
  for (int i = 0; i <= N; ++i) {
    int sz = states[i].size();
    dp_up[i].assign(sz, 0);
 
 
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• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 9 / 9
• Subtask 4: 14 / 14
• Subtask 5: 21 / 21
• Subtask 6: 17 / 17
• Subtask 7: 14 / 14
• Subtask 8: 16 / 16