Submission #729625

#	Time	Username	Problem	Language	Result	Execution time	Memory
729625		NeroZein	Robots (IOI13_robots)	C++17	0 / 100	1 ms	340 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>
using namespace std; 

const int N = 50004;  
const int T = 1000006;

int x[T], y[T];
int w[T], s[T];

int putaway(int A, int B, int T_, int X[], int Y[], int W[], int S[]) {
  int a, b, t;
  a = A;
  b = B;
  t = T_;
  for (int i = 0; i < a; ++i) {
    x[i] = X[i];
  }
  for (int i = 0; i < b; ++i) {
    y[i] = Y[i];
  }
  for (int i = 0; i < t; ++i) {
    w[i] = W[i], s[i] = S[i]; 
  }
  vector<pair<int, int>> toy(t); 
  for (int i = 0; i < t; ++i) {
    toy[i] = {w[i], s[i]};
  }
  sort(toy.begin(), toy.end(), greater<pair<int, int>>()); 
  auto ch = [&](int mid) {
    set<pair<int, int>> sx;
    set<pair<int, int>> se; 
    for (int i = 0; i < b; ++i) {
      se.emplace(y[i], mid); 
    }
    for (int i = 0; i < a; ++i) {
      sx.emplace(x[i], mid); 
    }
    for (int i = 0; i < t; ++i) {
      pair<int, int> pp = make_pair(toy[i].second, 0); 
      auto it = se.upper_bound(pp);
      if (it != se.end()) {
        auto it2 = *it; 
        se.erase(it); 
        it2.second--; 
        if (it2.second != 0) {
          se.emplace(it2); 
        }
      } else {
        pp = make_pair(toy[i].first, 0); 
        it = sx.upper_bound(pp); 
        if (it == sx.end()) {
          return false; 
        }
        sx.erase(it); 
        auto it2 = *it; 
        it2.second--; 
        if (it2.second) {
          sx.emplace(it2); 
        }
      }
    }
    return true; 
  };
  int l = 1, r = t + 1;
  while (l < r) {
    int mid = (l + r) >> 1; 
    if (ch(mid)) {
      r = mid;
    } else {
      l = mid + 1; 
    }
  }
  return (l == t + 1 ? -1 : l);
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 25
• Subtask 4: 0 / 37
• Subtask 5: 0 / 10