Submission #318887

#	Time	Username	Problem	Language	Result	Execution time	Memory
318887		leaked	Nivelle (COCI20_nivelle)	C++14	110 / 110	170 ms	1436 KiB

nivelle

#include<bits/stdc++.h>

using namespace std;
//#include<ext/pb_ds/assoc_container.hpp>
//#include<ext/pb_ds/tree_policy.hpp>
//
//    #pragma GCC optimize("-O3")
//    #pragma GCC optimize("no-stack-protector")
//    #pragma GCC optimize("fast-math")
//    #pragma GCC optimize("Ofast")
//    #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//    #pragma GCC target("avx,avx2,fma")
//    #pragma GCC optimization ("unroll-loops")
//#define LOCAL
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
  enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifndef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
	*this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define f first
#define vec vector
#define s second
#define p_b push_back
#define pb push_back
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<long long,long long> pll;
typedef pair<int,int> pii;
typedef pair<long long,int> pli;
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
#define m_p make_pair
#define fast_io cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(0);
#define all(x) x.begin(),x.end()
#define pw(x) (1ll << x)
#define sz(x) (int)x.size()
#define endl "\n"
#define rall(x) x.rbegin(),x.rend()
//#define int long long
//using namespace __gnu_pbds;
ld eps = (ld)1 / 1e6;
const ld pi=3.14159265359;
int inf = 1e9,mod1=1e9+7;
ll sqr(ll a) { return a * a; }
ll qb(ll a) { return a * a * a; }
template<typename T> bool umax(T& a, T b) {return a<b?a=b,1:0;}
template<typename T> bool umin(T& a, T b) {return b<a?a=b,1:0;}
bool is_prime(ll val){for(ll i=2;i<=sqrt(val);i++)if(val%i==0)return 0; return 1;}
ll gcd(ll a, ll b) { return !a ? b : gcd(b % a, a); }
ll binpow(ll a, ll b, ll mod) { return b ? (b % 2 ? (a * (sqr(binpow(a, b / 2, mod)) % mod)) % mod : sqr(binpow(a, b / 2, mod)) % mod) : 1; }ll binmult(ll a, ll b, ll mod) { return b ? (b % 2 ? (2 * binmult(a, b / 2, mod) + a) % mod : (2 * binmult(a, b / 2, mod)) % mod) : 0; }
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const ll RR=1e4;
const ll tx[8]={1,-1,2,-2,-1,-2};
const ll ty[8]={-2,-2,-1,-1,2,1};
const char rev_to[4]={'E','W','N','S'};
///////////////////fdsfsdfgdsjgdjfsgdsfsdkafsdaokfsdpofdckokfpgjvdsujbgdfpiodjOFCjs;igsd;cpjzckpdoskvgdok;a///////
const int ppp=73;
const int M=1e9+7;
///////////////////fdsfsdfgdsjgdjfsgdsfsdkafsdaokfsdpofdckokfpgjvdsujbgdfpiodjOFCjs;igsd;cpjzckpdoskvgdok;a///////
//const int ppp=73;
const int block=600;
const int OPEN=1;
const int CLOSE=0;
//typedef tree<pli,null_type,less<pli>,rb_tree_tag,tree_order_statistics_node_update> o_st;
auto rnd=bind(uniform_int_distribution<int>(1,5969699),mt19937(time(0)));
void bad(){
    cout<<"-1";
    exit(0);
}
vec<int>pos[26];
signed main()
{
    fast_io;
    int n;
    cin>>n;
    string s;
    cin>>s;
    for(int i=0;i<sz(s);i++){
        pos[s[i]-'a'].pb(i);
    }
    for(int j=0;j<26;j++){
        pos[j].pb(n);
    }
    for(int j=0;j<26;j++)
        reverse(all(pos[j]));
    ld ans=1;
    int l=0,r=0;
    for(int i=0;i<n;i++){
        priority_queue<int,vec<int>,greater<int>>pq;
        for(int j=0;j<26;j++){
            pq.push(pos[j].back());
        }
        pq.push(n);
        int cl=0;
        while(!pq.empty()){
            int pl=i,pr=pq.top()-1;
            pq.pop();
            if(cl){
                if(umin(ans,(ld)cl/(pr-pl+1)))
                    l=pl,r=pr;
            }
            cl++;
        }
        pos[s[i]-'a'].pop_back();
    }
    cout<<l+1<<' '<<r+1;
    return 0;
}
/*
new_dp[j]+=dp[i]*m[i][j]


*/

• Subtask 1: 7 / 7
• Subtask 2: 17 / 17
• Subtask 3: 13 / 13
• Subtask 4: 25 / 25
• Subtask 5: 48 / 48