Submission #818087

#	Time	Username	Problem	Language	Result	Execution time	Memory
818087		christinelynn	Gondola (IOI14_gondola)	C++17	55 / 100	20 ms	2300 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
const int MAX=25e4;
int valid(int n, int a[]) {
  int next=-1, ret=0;
  vector<bool> occ(MAX+1);
  for(int i=0; i<n; i++) {
    if(occ[a[i]]) return 0;
    occ[a[i]]=1;
    if(next!=-1) next=next%n+1;
    if(a[i]<=0) return 0;
    if(a[i]<=n) {
      if(next==-1) next=a[i];
      if(a[i]!=next) return 0;
    }
  }
  return 1;
}
int replacement(int n, int a[], int b[]) {
  int idx=0, next=-1;
  priority_queue<pair<int, int>> pq;
  int init[n];
  for(int i=0; i<n; i++) {
    if(next!=-1) init[i]=next=next%n+1;
    else if(a[i]<=n) init[i]=next=a[i];
  }
  if(next==-1) next=n;
  for(int i=0; i<n; i++) init[i]=next=next%n+1;
  for(int i=0; i<n; i++)
    if(a[i]>n) pq.push({-a[i], init[i]});
  next=n+1;
  while(!pq.empty()) {
    int u=pq.top().first, v=pq.top().second;
    u=-u; b[idx++]=v;
    while(next<u) b[idx++]=next++;
    next++;
    pq.pop();
  }
  return idx;
}
int countReplacement(int n, int a[]) {
  return 0;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:6:16: warning: unused variable 'ret' [-Wunused-variable]
    6 |   int next=-1, ret=0;
      |                ^~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10