Submission #219145

#	Time	Username	Problem	Language	Result	Execution time	Memory
219145		summitwei	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KiB

gondola

#include <bits/stdc++.h>
//#include <gondola.h>
using namespace std;
typedef vector<int> vi;
typedef vector<pair<int, int> > vpii;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<double, double> pdd;
typedef vector<ll> vll;
#define INF 0x3f3f3f3f
#define MOD 1000000009LL
#define EPSILON 0.00001
#define f first
#define s second
#define pb push_back
#define mp make_pair

#define FOR(i, a, b) for (ll i=(a); i<=(signed)(b); i++)
#define F0R(i, a) for (ll i=0; i<(signed)(a); i++)
#define RFOR(i, a, b) for (ll i=(a); i >= b; i--)

#define MN 100005
int rep[MN*2];
int valid(int n, int inputSeq[]){
    F0R(i, n) rep[i] = rep[i+n] = inputSeq[i];
    int loc = min_element(rep, rep+2*n)-rep;
    F0R(i, n) inputSeq[i] = rep[i+loc];
    set<int> hmm;
    int v = -1;
    if(inputSeq[0] <= n) v = inputSeq[0];
    F0R(i, n){
        if(hmm.count(rep[i])) return 0;
        hmm.insert(rep[i]);
        if(inputSeq[i]<=n && inputSeq[i]-i != v) return 0;
    }
    return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    //return 0;
    valid(n, gondolaSeq);
    map<int, int> ree;
    int v = 1;
    if(gondolaSeq[0] <= n) v = gondolaSeq[0];
    F0R(i, n){
        if(gondolaSeq[i] > n) ree[gondolaSeq[i]] = i+v>n?i+v-n:i+v;
    }
    if(ree.empty()){
        return 0;
    }
    int mx = (--ree.end())->f;
    int cur = (--ree.end())->s;
    FOR(i, n+1, mx){
        if(ree[i] == 0){
            replacementSeq[i-n-1] = cur;
            cur = i;
        } else if(i == mx){
            replacementSeq[i-n-1] = cur;
        } else{
            replacementSeq[i-n-1] = ree[i];
        }
    }
    return mx-n;
}
ll modExp(ll b, ll ex){
    ll prod = 1;
    while(ex > 0){
        if(ex % 2 == 0){
            b = (b * b) % MOD;
            ex /= 2;
        } else{
            prod = (prod*b) % MOD;
            ex--;
        }
    }
    
    return prod;
}
int countReplacement(int n, int inputSeq[]){
    if(!valid(n, inputSeq)) return 0;
    map<int, int> ree;
    int v = 1;
    if(inputSeq[0] <= n) v = inputSeq[0];
    F0R(i, n){
        if(inputSeq[i] > n) ree[inputSeq[i]] = i+v>n?i+v-n:i+v;
    }
    if(ree.empty()) return 1;
    int mx = (--ree.end())->f;
    int amt = ree.size();
    ll ans = 1;
    /*if(inputSeq[0] > n){
        FOR(i, 1, n) ans = (ans*i)%MOD;
    }*/
    if(inputSeq[0] > n) ans = n;
    /*FOR(i, n+1, mx){
        if(ree[i] == 0){
            ans = (ans*amt)%MOD;
        } else{
            --amt;
        }
    }*/
    int prev = n;
    for(auto u : ree){
        ans = (ans*modExp(amt, u.f-prev-1))%MOD;
        prev = u.f;
        --amt;
    }
    return (int)ans;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;
    int a[n];
    F0R(i, n) cin >> a[i];
    cout << countReplacement(n, a) << "\n";
    
    return 0;
}

Compilation message (stderr)

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:88:9: warning: unused variable 'mx' [-Wunused-variable]
     int mx = (--ree.end())->f;
         ^~
/tmp/ccP5ZLHq.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccyzrv5D.o:gondola.cpp:(.text.startup+0x0): first defined here
/tmp/ccP5ZLHq.o: In function `main':
grader.cpp:(.text.startup+0xc3): undefined reference to `countReplacement'
grader.cpp:(.text.startup+0xe2): undefined reference to `valid'
grader.cpp:(.text.startup+0x106): undefined reference to `replacement'
collect2: error: ld returned 1 exit status