Submission #577461

#	Time	Username	Problem	Language	Result	Execution time	Memory
577461		perchuts	Gondola (IOI14_gondola)	C++17	75 / 100	47 ms	6100 KiB

gondola

#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define pb push_back
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
 
using namespace std;
 
using ll = long long;
using ull = unsigned long long;
using ii = pair<int,int>;
using iii = tuple<int,int,int>;
 
const int inf = 2e9+1;
const int mod = 1e9+9;
const int maxn = 1e5+100;
 
template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }
 
#include "gondola.h"
 
int valid(int n,int v[]){
  vector<ii>v2;
  map<int,bool>mp;
  int mn = inf, idx = -1;
  for(int i=0;i<n;++i){
      if(mp[v[i]]==1)return 0;
      mp[v[i]] = 1;
      if(ckmin(mn,v[i]))idx = i;
  }
  if(mn>=n)return 1;
  for(int i=idx;i<n;++i)if(v[i]<=n)v2.pb({v[i],i-idx});
  for(int i=0;i<idx;++i)if(v[i]<=n)v2.pb({v[i],n-idx+i});
  for(int i=1;i<sz(v2);++i){
    if(v2[i].first-v2[i-1].first!=v2[i].second-v2[i-1].second)return 0;
  }     
  return 1;
}
 
//----------------------
 
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    int mn = n+1, idx = 0;
    for(int i=0;i<n;++i){
        if(ckmin(mn,gondolaSeq[i]))idx = i;
    }
    if(mn>n)mn = 1;
    vector<ii>ajusta;
    for(int i=idx;i<n;++i){
        if(gondolaSeq[i]>n)ajusta.pb({gondolaSeq[i],mn});
        mn++;
        if(mn>n)mn = 1;
    }
    for(int i=0;i<idx;++i){
        if(gondolaSeq[i]>n)ajusta.pb({gondolaSeq[i],mn});
        mn++;
        if(mn>n)mn = 1;
    }
    sort(all(ajusta));
    int cur = n+1;
    idx = 0;
    for(auto [b,a]:ajusta){
        while(a!=b){
            replacementSeq[idx++] = a, a = cur++;
        }
    }
    return idx;
}
 
//----------------------
 
ll fastexp(ll b,ll e){
  if(e==0)return 1ll;
  if(e==1)return b;
  ll sqr = fastexp(b,e/2), resp = (sqr*sqr)%mod;
  if(e&1)return (resp*b)%mod;
  return resp;
}
 
int countReplacement(int n, int inputSeq[])
{
  vector<ll>big;
  if(!valid(n,inputSeq))return 0;
  for(int i=0;i<n;++i){
    if(inputSeq[i]>n)big.pb(ll(inputSeq[i]));
  }
  sort(all(big));
  ll res = 1, last = n;
  for(int i=0;i<sz(big);++i){
    res = (res*fastexp(ll(sz(big)-i),ll(big[i]-last-1)))%mod, last = big[i];
  }
  return res;
}
 
// int v[maxn], resp[maxn];
// int main(){_
//   int n;cin>>n;
//   for(int i=0;i<n;++i)cin>>v[i];
//   cout<<countReplacement(n,v)<<endl;
// }

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 5 / 5
• Subtask 8: 15 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10