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Submission #197499

# Submission time Handle Problem Language Result Execution time Memory
197499 2020-01-21T13:13:56 Z handlename Gondola (IOI14_gondola) C++17
100 / 100
 58 ms 5380 KB 
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
int valid(int n, int inputSeq[]) {
    unordered_set<int> appeared;
    int value=-1;
    for (int i=0;i<n;i++){
        if (appeared.find(inputSeq[i])!=appeared.end()) return 0;
        appeared.insert(inputSeq[i]);
        if (inputSeq[i]>n) continue;
        if (value==-1) value=((inputSeq[i]-i)%n+n)%n;
        if (value<0) value+=n;
        else {
            int curval=((inputSeq[i]-i)%n);
            if (curval<0) curval+=n;
            if (curval!=value) return 0;
        }
    }
    return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
    int value=-1;
    vector<pair<int,int> > arr;
    int curnum=n+1,curpos=0;
    for (int i=0;i<n;i++){
        if (gondolaSeq[i]>n){
            arr.push_back(make_pair(gondolaSeq[i],i));
        }
        else value=((gondolaSeq[i]-i)%n+n)%n;
    }
    sort(arr.begin(),arr.end());
    for (int i=0;i<arr.size();i++){
        int endd=arr[i].first;
        int id=arr[i].second;
        int realid;
        if (value!=-1){
            realid=(value+id)%n;
        }
        else realid=id+1;
        if (realid==0) realid=n;
        replacementSeq[curpos]=realid;
        curpos++;
        while (curnum<endd){
            replacementSeq[curpos]=curnum;
            curnum++;
            curpos++;
        }
        curnum++;
        
    }
    return curpos;
}
long long m;
long long power(long long a,long long b){
    long long ans=1;
    a%=m;
    while (b>0){
        if (b%2==1) ans=(ans*a)%m;
        b/=2;
        a=(a*a)%m;
    }
    return ans;
}
int countReplacement(int n, int inputSeq[]) {
    if (valid(n,inputSeq)==0) return 0;
    m=1e9+9;
    int value=-1;
    vector<pair<int,int> > arr;
    for (int i=0;i<n;i++){
        if (inputSeq[i]>n){
            arr.push_back(make_pair(inputSeq[i],i));
        }
        else value=((inputSeq[i]-i)%n+n)%n;
    }
    sort(arr.begin(),arr.end());
    long long ans=1;
    if (value==-1) ans=n;
    int k=arr.size();
    int prevval=n+1;
    for (int i=0;i<arr.size();i++){
        int curval=arr[i].first;
        ans*=power(k-i,curval-prevval);
        ans%=m;
        prevval=curval+1;
    }
    return (int)ans;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<arr.size();i++){
                  ~^~~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:80:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<arr.size();i++){
                  ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 280 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 0 ms 376 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 0 ms 248 KB Output is correct
5 Correct 2 ms 400 KB Output is correct
6 Correct 12 ms 2332 KB Output is correct
7 Correct 14 ms 1144 KB Output is correct
8 Correct 23 ms 4104 KB Output is correct
9 Correct 8 ms 1400 KB Output is correct
10 Correct 25 ms 4616 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 360 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 0 ms 248 KB Output is correct
6 Correct 12 ms 2216 KB Output is correct
7 Correct 14 ms 1144 KB Output is correct
8 Correct 22 ms 4108 KB Output is correct
9 Correct 8 ms 1528 KB Output is correct
10 Correct 25 ms 4612 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 248 KB Output is correct
13 Correct 7 ms 632 KB Output is correct
14 Correct 2 ms 424 KB Output is correct
15 Correct 14 ms 1144 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 252 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 380 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 12 ms 1016 KB Output is correct
12 Correct 14 ms 1144 KB Output is correct
13 Correct 18 ms 1532 KB Output is correct
14 Correct 12 ms 1128 KB Output is correct
15 Correct 23 ms 2532 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 44 ms 4324 KB Output is correct
10 Correct 33 ms 3880 KB Output is correct
11 Correct 14 ms 1528 KB Output is correct
12 Correct 17 ms 2040 KB Output is correct
13 Correct 5 ms 760 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 39 ms 4236 KB Output is correct
10 Correct 33 ms 3880 KB Output is correct
11 Correct 14 ms 1532 KB Output is correct
12 Correct 17 ms 2040 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 49 ms 4996 KB Output is correct
15 Correct 58 ms 5380 KB Output is correct
16 Correct 11 ms 1272 KB Output is correct
17 Correct 39 ms 4104 KB Output is correct
18 Correct 22 ms 2344 KB Output is correct