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Submission #239912

# Submission time Handle Problem Language Result Execution time Memory
239912 2020-06-17T13:42:18 Z abacaba Gondola (IOI14_gondola) C++14
100 / 100
 97 ms 6392 KB 
#include <iostream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include "gondola.h"
#include <cstring>
#include <chrono>
#include <vector>
#include <map>
#include <random>
#include <set>
#include <algorithm>
#include <math.h>
#include <cstdio>
#include <stdio.h>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <deque>
#include <cassert>
#include <stack>
using namespace std;

#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define emb emplace_back
#define ll long long
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define endl '\n'
#define uset unordered_set
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template <typename T> inline T range(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}

inline void setin(string s) {
    freopen(s.c_str(), "r", stdin);
}

inline void setout(string s) {
    freopen(s.c_str(), "w", stdout);
}

template <typename T> void Min(T &a, T b) {
    a = min(a, b);
}

template <typename T> void Max(T &a, T b) {
    a = max(a, b);
}

const int inf = 0x3f3f3f3f;
const int mod = 1e9 + 9;
const int N = 3e5 + 15;

inline int add(int a, int b) {
    a = (a + b) % mod;
    return (a + mod) % mod;
}

inline int mt(int a, int b) {
    return 1ll * a * b % mod;
}

inline int binpow(int n, int k) {
    int res = 1;
    while(k) {
        if(k & 1)
            res = mt(res, n);
        n = mt(n, n);
        k >>= 1;
    }
    return res;
}

int a[N], b[N];

int valid(int n, int inputSeq[]) {
    map <int, int> cnt = {};
    for(int i = 0; i < n; ++i) {
        a[i] = inputSeq[i] - 1;
        if(cnt[a[i]])
            return 0;
        ++cnt[a[i]];
    }
    for(int i = 0; i < n; ++i) {
        if(a[i] < n) {
            int cnt = a[i];
            for(int j = i; j < n; ++j, cnt = (cnt + 1) % n)
                b[j] = cnt;
            for(int j = 0; j < i; ++j, cnt = (cnt + 1) % n)
                b[j] = cnt;
            break;
        }
    }
    for(int i = 0; i < n; ++i)
        if(a[i] < n && b[i] < n && a[i] != b[i])
            return 0;
    return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
    for(int i = 0; i < n; ++i)
        b[i] = i;
    for(int i = 0; i < n; ++i)
        a[i] = gondolaSeq[i] - 1;
    int cnt = n - 1;
    for(int i = 0; i < n; ++i) {
        if(a[i] < n) {
            int cnt = a[i];
            for(int j = i; j < n; ++j, cnt = (cnt + 1) % n)
                b[j] = cnt;
            for(int j = 0; j < i; ++j, cnt = (cnt + 1) % n)
                b[j] = cnt;
            break;
        }
    }
    vector <pii> now = {};
    for(int i = 0; i < n; ++i)
        if(a[i] >= n)
            now.pb({a[i], i});
    sort(now.begin(), now.end());
    int sz = 0;
    for(int k = 0; k < now.size(); ++k) {
        int val = now[k].f, i = now[k].se;
        int &cur = b[i];
        while(cnt < val) {
            replacementSeq[sz++] = cur + 1;
            cur = ++cnt;
        }
    }
    return sz;
}

int countReplacement(int n, int inputSeq[]) {
    if(!valid(n, inputSeq))
        return 0;
    for(int i = 0; i < n; ++i)
        a[i] = inputSeq[i] - 1;
    vector <int> now = {};
    for(int i = 0; i < n; ++i)
        if(a[i] >= n)
            now.pb(a[i]);
    now.pb(n-1);
    sort(now.begin(), now.end());
    int res = 1;
    for(int i = 1; i < now.size(); ++i)
        res = mt(res, binpow(now.size() - i, now[i] - now[i-1] - 1));
    if(now.size() == n + 1) {
        res = mt(res, n);
    }
    return res;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:134:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int k = 0; k < now.size(); ++k) {
                    ~~^~~~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:157:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 1; i < now.size(); ++i)
                    ~~^~~~~~~~~~~~
gondola.cpp:159:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(now.size() == n + 1) {
        ~~~~~~~~~~~^~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 19 ms 2560 KB Output is correct
7 Correct 18 ms 768 KB Output is correct
8 Correct 33 ms 4472 KB Output is correct
9 Correct 13 ms 1664 KB Output is correct
10 Correct 41 ms 5240 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 19 ms 2560 KB Output is correct
7 Correct 18 ms 768 KB Output is correct
8 Correct 37 ms 4476 KB Output is correct
9 Correct 16 ms 1664 KB Output is correct
10 Correct 44 ms 5240 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 25 ms 2432 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 63 ms 5368 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 16 ms 1280 KB Output is correct
12 Correct 18 ms 1408 KB Output is correct
13 Correct 21 ms 1552 KB Output is correct
14 Correct 15 ms 1280 KB Output is correct
15 Correct 25 ms 2424 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 53 ms 4600 KB Output is correct
10 Correct 46 ms 4040 KB Output is correct
11 Correct 18 ms 1664 KB Output is correct
12 Correct 22 ms 1920 KB Output is correct
13 Correct 8 ms 768 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 384 KB Output is correct
9 Correct 66 ms 4600 KB Output is correct
10 Correct 51 ms 3960 KB Output is correct
11 Correct 18 ms 1664 KB Output is correct
12 Correct 22 ms 1920 KB Output is correct
13 Correct 8 ms 640 KB Output is correct
14 Correct 70 ms 5752 KB Output is correct
15 Correct 97 ms 6392 KB Output is correct
16 Correct 16 ms 1536 KB Output is correct
17 Correct 58 ms 4472 KB Output is correct
18 Correct 30 ms 2680 KB Output is correct