Submission #790188

#	Time	Username	Problem	Language	Result	Execution time	Memory
790188		Sohsoh84	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KiB

gondola

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

using namespace std;

#define sep		' '
#define debug(x)	cerr << #x << ": " << x << endl;

const int MAXN = 1e6 + 10;

int A[MAXN];

int valid(int n, int inputSeq[]) {
	int s = -1;
	set<int> tst;

	for (int i = 0; i < n; i++) inputSeq[i]--;
	for (int i = 0; i < n; i++) {
		if (inputSeq[i] < n)
			s = i;
		tst.insert(inputSeq[i]);
	}

	if (int(tst.size()) < n) return 0;
	if (s == -1) return 1;
	
	int shift_val = (s - inputSeq[s] + n) % n;
	for (int j = 0; j < n; j++)
		A[j] = inputSeq[(j + shift_val) % n];

	set<int> st;
	for (int i = 0; i < n; i++) {
		if (A[i] < n)
			if (A[i] != i) return 0;
		else
			A[i] = i;

		st.insert(A[i]);
	}
	return st.size() == n;
}

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

int replacement(int n, int gondolaSeq[], int res[]) {
	for (int i = 0; i < n; i++) inputSeq[i]--;
	for (int i = 0; i < n; i++) {
		if (inputSeq[i] < n)
			s = i;
	}

	int shift_val = (s == -1 ? 0 : (s - inputSeq[s] + n) % n);
	for (int j = 0; j < n; j++)
		A[j] = inputSeq[(j + shift_val) % n];

	set<int> st;
	int mx = *max_element(A, A + n);
	for (int i = 0; i <= mx; i++)
		st.insert(i);

	for (int i = 0; i < n; i++)
		st.erase(A[i]);

	set<pll> gond;
	for (int i = 0; i < n; i++)
		gond.insert({A[i], i});

	int m = 0;
	while (gond.rbegin() -> X > n) {
		auto [x, ind] = *prev(gond.end());
		gond.erase(prev(gond.end()));
		if (st.find(x - 1) != st.end()) {
			A[ind] = x - 1;
			st.erase(x - 1);
			res[m++] = x - 1;
		} else {
			A[ind] = ind;
			st.erase(ind);
			res[m++] = ind;
		}

		gond.insert(A[ind, ind]);
	}

	reverse(res, res + m);
	return m;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:33:6: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   33 |   if (A[i] < n)
      |      ^
gondola.cpp:40:19: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   40 |  return st.size() == n;
      |         ~~~~~~~~~~^~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:46:30: error: 'inputSeq' was not declared in this scope
   46 |  for (int i = 0; i < n; i++) inputSeq[i]--;
      |                              ^~~~~~~~
gondola.cpp:48:7: error: 'inputSeq' was not declared in this scope
   48 |   if (inputSeq[i] < n)
      |       ^~~~~~~~
gondola.cpp:49:4: error: 's' was not declared in this scope
   49 |    s = i;
      |    ^
gondola.cpp:52:19: error: 's' was not declared in this scope
   52 |  int shift_val = (s == -1 ? 0 : (s - inputSeq[s] + n) % n);
      |                   ^
gondola.cpp:52:38: error: 'inputSeq' was not declared in this scope
   52 |  int shift_val = (s == -1 ? 0 : (s - inputSeq[s] + n) % n);
      |                                      ^~~~~~~~
gondola.cpp:64:6: error: 'pll' was not declared in this scope
   64 |  set<pll> gond;
      |      ^~~
gondola.cpp:64:9: error: template argument 1 is invalid
   64 |  set<pll> gond;
      |         ^
gondola.cpp:64:9: error: template argument 2 is invalid
gondola.cpp:64:9: error: template argument 3 is invalid
gondola.cpp:66:8: error: request for member 'insert' in 'gond', which is of non-class type 'int'
   66 |   gond.insert({A[i], i});
      |        ^~~~~~
gondola.cpp:69:14: error: request for member 'rbegin' in 'gond', which is of non-class type 'int'
   69 |  while (gond.rbegin() -> X > n) {
      |              ^~~~~~
gondola.cpp:70:30: error: request for member 'end' in 'gond', which is of non-class type 'int'
   70 |   auto [x, ind] = *prev(gond.end());
      |                              ^~~
gondola.cpp:71:8: error: request for member 'erase' in 'gond', which is of non-class type 'int'
   71 |   gond.erase(prev(gond.end()));
      |        ^~~~~
gondola.cpp:71:24: error: request for member 'end' in 'gond', which is of non-class type 'int'
   71 |   gond.erase(prev(gond.end()));
      |                        ^~~
gondola.cpp:82:8: error: request for member 'insert' in 'gond', which is of non-class type 'int'
   82 |   gond.insert(A[ind, ind]);
      |        ^~~~~~