Submission #307857

#	Time	Username	Problem	Language	Result	Execution time	Memory
307857		Hehehe	Jousting tournament (IOI12_tournament)	C++14	0 / 100	136 ms	3332 KiB

tournament

#include<bits/stdc++.h> //:3
using namespace std;
typedef long long ll;
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define pi pair<int, int>
#define sz(x) (int)((x).size())
//#define int long long

const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};

const ll inf = 2e6;
const ll mod = 1e9 + 7;
const int N = 2e5 + 11;
const ll INF64 = 2e9 + 1;
const double eps = 1e-14;
const double PI = acos(-1);

//ifstream in(".in");
//ofstream out(".out");

int t[4*N];
int sum[N], ans, nxt[N];


void update(int v, int l, int r, int pos, int val){
    if(l == r){
        t[v] = val;
        return;
    }

    int mid = (l + r) >> 1;
    if(pos <= mid)update(2*v, l, mid, pos, val);else update(2*v + 1, mid + 1, r, pos, val);
    t[v] = t[2*v]  + t[2*v + 1];
}

void update2(int v, int l, int r, int pos, int val){
    if(l == r){
        t[v] = val;
        return;
    }

    int mid = (l + r) >> 1;
    if(pos <= mid)update2(2*v, l, mid, pos, val);else update2(2*v + 1, mid + 1, r, pos, val);
    t[v] = max(t[2*v], t[2*v + 1]);
}

int xth(int v, int l, int r, int x){
    if(l == r){
        return l;
    }

    int mid = (l + r) >> 1;
    if(t[2*v] >= x)return xth(2*v, l, mid, x);
    return xth(2*v + 1, mid + 1, r, x - t[2*v]);
}

int mx(int v, int l, int r, int tl, int tr){
    if(tl <= l && r <= tr)return t[v];
    if(l > tr || r < tl)return -INF64;
    int mid = (l + r) >> 1;
    return max(mx(2*v, l, mid, tl, tr), mx(2*v + 1, mid + 1, r, tl ,tr));
}

int GetBestPosition(int n, int C, int R, int *K, int *S, int *E){
    n--;

	for(int i = 1; i <= n; i++){
        nxt[i] = i + 1;
        update(1, 1, n, i, 1);
	}

	for(int i = 1; i <= C; i++){
		int a = xth(1, 1, n, S[i - 1] + 1);
		int tmp = a;
		for(int j = 1; j <= E[i - 1] - S[i - 1]; j++){
			tmp = nxt[tmp];
			update(1, 1, n, tmp, 0);
		}
		nxt[a] = nxt[tmp]; //cout << a << ' ' << nxt[tmp] << '\n';
		E[i - 1] = nxt[tmp] - 1;
		S[i - 1] = a;
	}

	for(int i = 1; i <= n; i++){
        update(1, 1, n, i, 0);
	}

	for(int i = 1; i <= n; i++){
        update2(1, 1, n, i, K[i - 1]);
	}

	//cout << "Here" << '\n';
	for(int i = 0; i < C; i++){
        //cout << S[i] << ' ' << E[i] << '\n';
	}


	for(int i = 1; i <= C; i++){
		int s = mx(1, 1, n, S[i - 1], E[i - 1] - 1);
		if(s < R)sum[S[i - 1]]++, sum[E[i - 1] + 1]--;
	}

	for(int i = 1; i <= n; i++) sum[i] += sum[i - 1];
	for(int i = 1; i <= n; i++)if(sum[ans] < sum[i]) ans = i;

	return ans - 1;
}

• Subtask 1: 0 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51