oj.uz

Submission #246116

# Submission time Handle Problem Language Result Execution time Memory
246116 2020-07-08T07:39:04 Z leaked Poklon (COCI17_poklon) C++14
140 / 140
 3119 ms 15224 KB 
#include<bits/stdc++.h>
using namespace std;
//#include<ext/pb_ds/assoc_container.hpp>
//#include<ext/pb_ds/tree_policy.hpp>
//
    #pragma GCC optimize("unroll-loops")
    #pragma GCC optimize("Ofast")
    #pragma GCC optimize("-O3")
    #pragma GCC optimize("no-stack-protector")
    #pragma GCC optimize("fast-math")
//#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(cout<< *x, 0);
sim > char dud(...);
struct debug {
#ifndef LOCAL
~debug() { cout << endl; }
eni(!=) cout << 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 fi first
#define f first
#define se second
#define s second
#define vi_a vector<int>a;
#define p_b push_back
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
#define ll long long
////////////////////////////////???????????????CHECK THIS OUT???????????????//////////////////////////////
#define ld long double
#define pll pair<ll,ll>
#define pii pair<int,int>
#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 getfiles    ifstream cin("input.txt");ofstream cout("output.txt");
#define pw(x) (1ll << x)
#define sz(x) (ll)x.size()
#define endl "\n"
#define rall(x) x.rbegin(),x.rend()
#define len(a) (ll)a.size()
#define rep(x,l,r) for(ll x=l;x<r;x++)

//using namespace __gnu_pbds;
ld eps = (ld)1 / 1e6;
const ld pi=3.14159265359;
ll inf = 1e18,mod1=1e9+7;
ll sqr(ll a) { return a * a; }
ll qb(ll a) { return a * a * a; }
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 R=1e4;
const ll tx[4]={0,0,-1,1};
const ll ty[4]={-1,1,0,0};
const char rev_to[4]={'E','W','N','S'};
const int N=2e6+1;
const int M=999999937;
int block=112;
int mp[N];
int n,a[N];
int fnw[N];
ll ans=0;
void f(int pos,int val){
    fnw[pos]+=val;
}
void add(int val){
    f(mp[val],-1);
    mp[val]++;
    f(mp[val],1);
}
void del(int val){
    f(mp[val],-1);
    mp[val]--;
    f(mp[val],1);
}
bool cmp(pair<int,pii>aa,pair<int,pii>b){
    if((aa.s.f/block)==(b.s.f/block)) return aa.s.s<b.s.s;
    else return (aa.s.f/block)<(b.s.f/block);
}
int q;
bool cmp1(int aa,int b){
    return a[aa]<a[b];
}
signed main(){
    fast_io;
    cin>>n>>q;
    block=777;
    vector<int>b(n);
    vector<int>nw(n);
    for(int i=0;i<n;i++) cin>>a[i];
    iota(all(b),0);
    vector<pair<int,pii>>lol(q);
    for(int i=0;i<q;i++){
        cin>>lol[i].s.f>>lol[i].s.s;
        lol[i].f=i;
    }
    sort(all(b),cmp1);
    nw[b[0]]=0;
    for(int i=1;i<n;i++){
        if(a[b[i]]==a[b[i-1]]) nw[b[i]]=nw[b[i-1]];
        else nw[b[i]]=nw[b[i-1]]+1;
    }
    for(int i=0;i<n;i++) a[i]=nw[i];
    sort(all(lol),cmp);
    vector<int>ans(q);
    int l=0,r=0;
    add(a[0]);
    for(int i=0;i<q;i++){
        int idx=lol[i].f,rl=lol[i].s.f-1,rr=lol[i].s.s-1;
        while(l>rl){
            add(a[l-1]);--l;
        }
        while(l<rl){
            del(a[l]);l++;
        }
        while(r<rr){
            add(a[r+1]);r++;
        }
        while(r>rr){
            del(a[r]);r--;
        }
        ans[idx]=fnw[2];
    }
    for(auto &z : ans) cout<<z<<endl;
    return 0;
}
///stuff you should look for :
/*
	* int overflow, array bounds
	* special cases (n=1?)
	* do smth instead of nothing and stay organized
	* read the conditions carefully
	* WRITE STUFF DOWN
*/

Subtask #1
140.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 15 ms 576 KB Output is correct
5 Correct 319 ms 3296 KB Output is correct
6 Correct 312 ms 3324 KB Output is correct
7 Correct 791 ms 6296 KB Output is correct
8 Correct 1440 ms 9336 KB Output is correct
9 Correct 2205 ms 12280 KB Output is correct
10 Correct 3119 ms 15224 KB Output is correct