Submission #1217387

#	Time	Username	Problem	Language	Result	Execution time	Memory
1217387		dosts	Nile (IOI24_nile)	C++20	67 / 100	2095 ms	6468 KiB

nile

#include "nile.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#define int long long
#define pii pair<int,int>
#define vi vector<int>
#define ff first
#define ss second
#define sp << " " <<
#define all(x) x.begin(),x.end()
#define big(x) ((int)(x.size()))
using namespace std;
const int MOD = 1e9+7, LIM = 1e6+1, inf = 2e9;

std::vector<long long> calculate_costs(std::vector<signed> W, std::vector<signed> A,
                                       std::vector<signed> B, std::vector<signed> E) {
  int Q = big(E);
  int N = big(W);
  vi inds(N);
  iota(all(inds),0ll);
  sort(all(inds),[&](int x,int y) {return W[x] < W[y];});
  vi benefit(N);
  int sm = 0;
  for (int i = 0;i<N;i++) {
    sm+=A[inds[i]];
    benefit[i] = A[inds[i]]-B[inds[i]];
  }
  std::vector<long long> R(Q, 0);
  for (int ii = 0;ii<Q;ii++) {
    int D = E[ii];
    vi dp(N,0);
    dp[0] = 0;
    for (int i=1;i<N;i++) {
      dp[i] = dp[i-1];
      if (W[inds[i]]-W[inds[i-1]] <= D) {
        if (i == 1) dp[i] = max(dp[i],benefit[i]+benefit[i-1]);
        else dp[i] = max(dp[i],benefit[i]+benefit[i-1]+dp[i-2]);
      }
      if (i>=2 && W[inds[i]]-W[inds[i-2]] <= D) {
        dp[i] = max(dp[i],benefit[i]+benefit[i-2]+((i>2)?dp[i-3]:0ll));
      }
    }
    R[ii] = sm-dp[N-1];
  }
  return R;
}

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 13 / 13
• Subtask 3: 17 / 17
• Subtask 4: 11 / 11
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15
• Subtask 7: 0 / 18