Submission #98027

#	Time	Username	Problem	Language	Result	Execution time	Memory
98027		MiricaMatei	Robots (IOI13_robots)	C++14	100 / 100	1809 ms	20652 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>

using namespace std;

pair<int, int>toys[1000005];

bool ok(int freq, int a, int b, int t, int x[], int y[]) {
  int p = 0;
  priority_queue<int> s;
  for (int i = 0; i < a; ++i) {
    while (p < t && toys[p].first < x[i]) {
      s.push(toys[p].second);
      p++;
    }
    int aux = freq;
    for (int aux = freq; aux && !s.empty(); --aux)
      s.pop();
  }
  for (; p < t; ++p)
    s.push(toys[p].second);

  for (int i = b - 1; i >= 0 && !s.empty(); --i) {
    for (int aux = freq; aux && !s.empty(); --aux) {
      int vl = s.top();
      s.pop();
      if (vl >= y[i])
        return 0;
    }
  }
  if (s.empty())
    return 1;
  return 0;
}

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
  for (int i = 0; i < T; ++i)
    toys[i] = {W[i], S[i]};

  sort(X, X + A);
  sort(Y, Y + B);
  sort(toys, toys + T);

  int l = 1, r = T, last = -1;
  while (l <= r) {
    int mid = (l + r) / 2;
    if (ok(mid, A, B, T, X, Y)) {
      last = mid;
      r = mid - 1;
    } else {
      l = mid + 1;
    }
  }

  return last;
}

/*int x[50005], y[50005], w[1000005], s[1000005];

int main() {
  freopen("robots.in", "r", stdin);
  freopen("robots.out", "w", stdout);
  int A, B, T;
  scanf("%d%d%d", &A, &B, &T);
  for (int i = 0; i < A; ++i)
    scanf("%d", &x[i]);
  for (int i = 0; i < B; ++i)
    scanf("%d", &y[i]);
  for (int i = 0; i < T; ++i)
    scanf("%d%d", &w[i], &s[i]);
  printf("%d\n", putaway(A, B, T, x, y, w, s));
  return 0;
}*/

Compilation message (stderr)

robots.cpp: In function 'bool ok(int, int, int, int, int*, int*)':
robots.cpp:16:9: warning: unused variable 'aux' [-Wunused-variable]
     int aux = freq;
         ^~~

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