Submission #1140420

#	Time	Username	Problem	Language	Result	Execution time	Memory
1140420		Lemser	Teams (IOI15_teams)	C++20	34 / 100	4094 ms	76356 KiB

teams

#include "teams.h"
#include <bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC target("popcnt")
#pragma GCC optimization ("O3, Ofast")
#pragma GCC optimization ("unroll-loops")
using namespace std;
 
using ll = long long;
using ull = unsigned long long;
using lld = long double;
using pii = pair<int,int>;
using pll = pair<ll, ll>;
 
using vi = vector<int>;
using vll = vector<ll>;
using vpii = vector<pii>;
using vpll = vector<pll>;
using vlld = vector<lld>;
 
// #define endl '\n'
#define all(x) x.begin(),x.end()
#define lsb(x) x&(-x)
#define gcd(a,b) __gcd(a,b)
#define sz(x) (int)x.size()
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fls cout.flush()
 
#define fore(i,l,r) for(auto i=l;i<r;i++)
#define fo(i,n) fore(i,0,n)
#define forex(i,r,l) for(auto i=r; i>=l;i--)
#define ffo(i,n) forex(i,n-1,0)
 
bool cmin(ll &a, ll b) { if(b<a){a=b;return 1;}return 0; }
bool cmax(ll &a, ll b) { if(b>a){a=b;return 1;}return 0; }
void valid(ll in) { cout<<((in)?"YES\n":"NO\n"); }
ll lcm(ll a, ll b) { return (a/gcd(a,b))*b; }
ll gauss(ll n) { return (n*(n+1))/2; }

const int INF = 1e9;


const int N = 1e5 + 7;

int st[4*N];
deque<int> as[N];
int a[N], b[N];
int n;

void update (int id, int val) {
	id += n;
	for (st[id] = val; id > 1; id >>= 1)
		st[id>>1] = min(st[id], st[id^1]);
}

int query (int ql, int qr) {
	int ans = INF;
	for (ql += n, qr += n+1; ql < qr; ql >>= 1, qr >>= 1) {
		if (ql&1) ans = min(ans, st[ql++]);
		if (qr&1) ans = min(ans, st[--qr]);
	}
	return ans;
}

void init(int N, int A[], int B[]) {
	n = N;
	vector<array<int, 2>> rs(n);
	fo (i, n) rs[i] = {A[i], B[i]};
	sort (all(rs));
	fo (i, n) a[i] = rs[i][0], b[i] = rs[i][1];
	fo (i, n) as[b[i]].push_back(i);
	fore (i, 1, n+1) {
		if (sz(as[i]) == 0) {
			update (i, INF);
			continue;
		}
		update(i, as[i].front());
	}
}

void clear (vector<int> &dxs) {
	reverse(all(dxs));
	for (int i: dxs) {
		as[b[i]].push_front(i);
		update(b[i], i);
	}
}

int can(int M, int K[]) {
	sort(K, K+M);
	vector<int> dxs;
	fo (i, M) {
		int l = 0, r = n-1, lb, rb;
		while (l <= r) {
			int m = (l+r)/2;
			if (a[m] <= K[i]) l = m+1;
			else r = m-1;
		}
		if (r < 0) {
			clear(dxs);
			return 0;
		}
		int w = K[i];
		while (K[i] > 0) {
			lb = w, rb = n;
			while (lb <= rb) {
				ll m = (lb + rb)/2;
				if (query(w, m) <= r) rb = m-1;
				else lb = m+1;
			}
			if (lb > n) {
				clear(dxs);
				return 0;
			}
			int j = as[lb].front();
			as[lb].pop_front();
			w = lb;
			if (sz(as[lb]) == 0) update(lb, INF);
			else update(lb, as[lb].front());
			dxs.pb(j);
			K[i]--;
		}
	}
	clear(dxs);
	return 1;
}

• Subtask 1: 21 / 21
• Subtask 2: 13 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23