Submission #469597

# Submission time Handle Problem Language Result Execution time Memory
469597 2021-09-01T12:08:42 Z Soumya1 Gondola (IOI14_gondola) C++17
55 / 100
50 ms 4640 KB
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
int valid(int n, int a[]) {
  bool ok = true;
  map<int, bool> mp;
  for (int i = 0; i < n; i++) {
    ok &= (!mp[a[i]]);
    mp[a[i]] = true;
  }
  int pos = -1, val = -1;
  for (int i = 0; i < n; i++) {
    if (a[i] <= n) {
      val = a[i];
      pos = i;
      break;
    }
  }
  val++;
  if (val > n) val = 1;
  for (int i = pos + 1; i < n; i++) {
    if (a[i] <= n) {
      ok &= (a[i] == val);
    }
    val++;
    if (val > n) val = 1;
  }
  for (int i = 0; i < pos; i++) {
    if (a[i] <= n) {
      ok &= (a[i] == val);
    }
    val++;
    if (val > n) val = 1;
  }
  return (int) ok;
}
int replacement(int n, int a[], int ans[]) {
  int pos = -1, val = -1;
  for (int i = 0; i < n; i++) {
    if (a[i] <= n) {
      pos = i;
      val = a[i];
      break;
    }
  }
  vector<pair<int, int>> v;
  for (int i = 0; i < n; i++) {
    if (a[i] > n) v.push_back({a[i], i});
  }
  if (pos != -1) {
    for (int i = pos; i < n; i++) {
      a[i] = val++;
      if (val > n) val = 1;
    }
    for (int i = 0; i < pos; i++) {
      a[i] = val++;
      if (val > n) val = 1;
    }
  } else {
    for (int i = 0; i < n; i++) a[i] = i + 1;
  }
  int ptr = 0;
  sort(v.begin(), v.end());
  int cur = n + 1;
  for (int i = 0; i < v.size(); i++) {
    while (cur <= v[i].first) {
      ans[ptr++] = a[v[i].second];
      a[v[i].second] = cur++;
    }
  }
  return ptr;
}
int bigmod(int a, int b) {
  a %= mod;
  int res = 1;
  while (b > 0) {
    if (b & 1) res = (1LL * res * a) % mod;
    a = (1LL * a * a) % mod, b >>= 1;
  }
  return res;
}
int countReplacement(int n, int a[]) {
  if (!valid(n, a)) return 0;
  int ans = 1;
  sort(a, a + n);
  int last = n;
  for (int i = 0; i < n; i++) {
    if (a[i] <= n && i == 0) {
      ans = (1LL * ans * n) % mod;
    } else if (a[i] > n) {
      ans = (1LL * ans * bigmod(n - i, a[i] - last - 1)) % mod;
      last = a[i];
    }
  }
  return ans;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:66:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |   for (int i = 0; i < v.size(); i++) {
      |                   ~~^~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 15 ms 2132 KB Output is correct
7 Correct 37 ms 3652 KB Output is correct
8 Correct 30 ms 3924 KB Output is correct
9 Correct 9 ms 1356 KB Output is correct
10 Correct 35 ms 4424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 15 ms 2216 KB Output is correct
7 Correct 37 ms 3528 KB Output is correct
8 Correct 30 ms 3936 KB Output is correct
9 Correct 8 ms 1356 KB Output is correct
10 Correct 35 ms 4420 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 19 ms 2064 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 50 ms 4640 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 9 ms 588 KB Output is correct
12 Correct 11 ms 620 KB Output is correct
13 Correct 18 ms 1176 KB Output is correct
14 Correct 9 ms 588 KB Output is correct
15 Correct 23 ms 2148 KB Output is correct
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -