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Submission #253316

# Submission time Handle Problem Language Result Execution time Memory
253316 2020-07-27T17:09:58 Z eohomegrownapps Gondola (IOI14_gondola) C++14
90 / 100
 23 ms 2288 KB 
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll m = 1000000009;

int valid(int n, int inputSeq[]){
    vector<bool> seen(250002,false);
    int mnv = 250002;
    int mnind = -1;
    for (int i = 0; i<n; i++){
        if (seen[inputSeq[i]]){
            return 0;
        }
        seen[inputSeq[i]]=true;
        if (mnv>inputSeq[i]){
            mnv=inputSeq[i];
            mnind=i;
        }
    }
    if (mnv>n){
        return 1;
    }
    mnv++;
    for (int i = (mnind+1)%n; i!=mnind; i=(i+1)%n){
        if (1<=inputSeq[i]&&inputSeq[i]<=n){
            if (mnv!=inputSeq[i]){
                return 0;
            }
        }
        mnv++;
    }
    return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    vector<pair<int,int>> gondind;
    int oneind = 0;
    for (int i = 0; i<n; i++){
        if (gondolaSeq[i]<n){
            oneind=(i+n-(gondolaSeq[i]-1))%n;
            break;
        }
    }
    for (int i = 0; i<n; i++){
        if (gondolaSeq[i]>=n){
            gondind.push_back({gondolaSeq[i],i});
        }
    }
    vector<int> gondolas(n);
    
    int gptr = oneind;
    int incr = 0;
    do {
        gondolas[gptr]=incr;
        gptr++;incr++;
        gptr%=n;
    } while (gptr!=oneind);

    sort(gondind.begin(),gondind.end());
    int ptr = 0;
    int gprev = n;
    int nextgondola = n;
    for (auto g : gondind){
        for (int h = gprev; h<g.first; h++){
            //replace gondola at index g.second
            replacementSeq[ptr]=gondolas[g.second]+1;
            ptr++;
            gondolas[g.second]=nextgondola;
            nextgondola++;
        }
        gprev=g.first;
    }
    return ptr;
}

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

ll mexp(ll a, ll b){
    if (b==0){
        return 1;
    }
    if (b%2==1){
        ll ans = mexp(a,(b-1)/2);
        return (((ans*ans)%m)*a)%m;
    } else {
        ll ans = mexp(a,b/2);
        return (ans*ans)%m;
    }
}

int countReplacement(int n, int inputSeq[]){
    if (!valid(n,inputSeq)){
        return 0;
    }
    vector<ll> highervals;
    for (int i = 0; i<n; i++){
        if (inputSeq[i]>n){
            highervals.push_back(inputSeq[i]);
        }
    }
    if (highervals.size()==0){
        return 1;
    }
    ll ans = 1;
    if (highervals.size()==n){
        ans=n;
    }
    sort(highervals.begin(),highervals.end());
    ll prevval = n;
    for (ll i = 0; i<highervals.size(); i++){
        ll diff = highervals[i]-prevval-1;
        ans*=mexp(highervals.size()-i,diff);
        ans%=m;
        prevval=highervals[i];
    }
    return ans;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:108:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (highervals.size()==n){
         ~~~~~~~~~~~~~~~~~^~~
gondola.cpp:113:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (ll i = 0; i<highervals.size(); i++){
                    ~^~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 13 ms 640 KB Output is correct
8 Correct 12 ms 640 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 12 ms 640 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 9 ms 512 KB Output is correct
7 Correct 19 ms 640 KB Output is correct
8 Correct 16 ms 640 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 19 ms 640 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 9 ms 512 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 14 ms 640 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 11 ms 896 KB Output is correct
12 Correct 13 ms 1024 KB Output is correct
13 Correct 16 ms 1288 KB Output is correct
14 Correct 11 ms 896 KB Output is correct
15 Correct 23 ms 2288 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 20 ms 1276 KB Output is correct
10 Correct 16 ms 1148 KB Output is correct
11 Correct 7 ms 768 KB Output is correct
12 Correct 7 ms 768 KB Output is correct
13 Correct 2 ms 512 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 19 ms 1276 KB Output is correct
10 Correct 15 ms 1148 KB Output is correct
11 Correct 6 ms 768 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Runtime error 16 ms 1144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Halted 0 ms 0 KB -