Submission #296375

#	Time	Username	Problem	Language	Result	Execution time	Memory
296375		emil_physmath	Gondola (IOI14_gondola)	C++17	20 / 100	43 ms	5240 KiB

gondola

#include "gondola.h"
#include <set>
#include <vector>
#include <iostream>
using namespace std;
#define BUGO(x) cerr << #x << " = " << x << '\n';

int valid(int n, int a[])
{
    if (set<int>(a, a + n).size() != n) return false;
    vector<int> b; b.reserve(n);
    for (int i = 0; i < n; ++i)
        if (a[i] <= n)
            b.push_back(a[i]);
    if (b.empty()) return true;
    int i = 0;
    while (i + 1 < b.size() && b[i] < b[i + 1]) ++i;
    if (i == n - 1) return true;
    int j = b.size() - 1;
    while (j - 1 >= 0 && b[j - 1] <= b[j]) --j;
    return (b.back() < b[0] && i + 1 == j);
}

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

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:10:35: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   10 |     if (set<int>(a, a + n).size() != n) return false;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
gondola.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     while (i + 1 < b.size() && b[i] < b[i + 1]) ++i;
      |            ~~~~~~^~~~~~~~~~

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