Submission #105079

#	Time	Username	Problem	Language	Result	Execution time	Memory
105079		WLZ	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KiB

gondola

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

int valid(int n, int inputSeq[]) {
  int pos = -1;
  set<int> used;
  for (int i = 0; i < n; i++) {
    if (inputSeq[i] <= n) {
      pos = i;
      break;
    }
  }
  if (pos == -1) {
    return 1;
  }
  int cur = inputSeq[pos] - pos;
  if (cur < 1) {
    cur = n - cur;
  }
  for (int i = 0; i < n; i++) {
    if (inputSeq[i] <= n && inputSeq[i] != cur) {
      return 0;
    }
    if (used.count(inputSeq[i])) {
      return 0;
    }
    used.insert(inputSeq[i]);
    cur++;
    if (cur > n) {
      cur = 1;
    }
  }
  return 1;
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
  return -2;
}

//----------------------

int countReplacement(int n, int inputSeq[]) {
  return -3;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:6:3: error: 'set' was not declared in this scope
   set<int> used;
   ^~~
gondola.cpp:6:3: note: suggested alternative:
In file included from /usr/include/c++/7/set:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from gondola.cpp:2:
/usr/include/c++/7/bits/stl_set.h:93:11: note:   'std::set'
     class set
           ^~~
gondola.cpp:6:7: error: expected primary-expression before 'int'
   set<int> used;
       ^~~
gondola.cpp:24:9: error: 'used' was not declared in this scope
     if (used.count(inputSeq[i])) {
         ^~~~
gondola.cpp:27:5: error: 'used' was not declared in this scope
     used.insert(inputSeq[i]);
     ^~~~