Submission #17148

#	Time	Username	Problem	Language	Result	Execution time	Memory
17148		murat	Jousting tournament (IOI12_tournament)	C++98	49 / 100	1000 ms	35124 KiB

tournament

#include<bits/stdc++.h>

using namespace std;

#define dbgs(x) cerr << (#x) << " --> " << (x) << ' '
#define dbg(x) cerr << (#x) << " --> " << (x) << endl

#define foreach(i,x) for(type(x)i=x.begin();i!=x.end();i++)
#define FOR(ii,aa,bb) for(int ii=aa;ii<=bb;ii++)
#define ROF(ii,aa,bb) for(int ii=aa;ii>=bb;ii--)

#define type(x) __typeof(x.begin())

#define orta (bas + son >> 1)
#define sag (k + k + 1)
#define sol (k + k)

#define pb push_back
#define mp make_pair

#define nd second
#define st first

#define endl '\n'

typedef pair < int ,int > pii;

typedef long long ll;

const long long linf = 1e18+5;
const int mod = (int) 1e9 + 7;
const int logN = 17;
const int inf = 1e9;
const int N = 2e5 + 5;

class node {
    public:
    int xx, yy, sum;
    node() { xx = yy = sum = 0; }
} ST[N << 2];

int val[N], R, mx[N << 2], a[N], n, m, x, y, z, t, cc, ans, l[N], r[N];
vector< pii > s[N], f[N];
pii ST3[N << 2];

node init(int k, int bas, int son) {
    if(bas == son) { ST[k].xx = ST[k].yy = bas; ST[k].sum = 1; return ST[k]; }
    init(sol, bas, orta);
    init(sag, orta+1, son);
    ST[k].xx = bas;
    ST[k].yy = son;
    ST[k].sum = son - bas + 1;
    return ST[k];
}

pii query(int k, int bas, int son, int x) {
    if(bas == son) { return mp(ST[k].xx, ST[k].yy); }
    if(ST[sol].sum >= x) return query(sol, bas, orta, x);
    return query(sag, orta+1, son, x-ST[sol].sum);
}

node update(int k, int bas, int son, int x) {
    if(bas == son) { ST[k].xx = ST[k].yy = ST[k].sum = 0; return ST[k]; }
    if(ST[sol].sum >= x) update(sol, bas, orta, x);
    else update(sag, orta+1, son, x - ST[sol].sum);
    ST[k].sum = ST[sol].sum + ST[sag].sum;
    return ST[k];
}

node make(int k, int bas, int son, int x, pii t) {
    if(bas == son) { ST[k].xx = t.st; ST[k].yy = t.nd; ST[k].sum = 1; return ST[k]; }
    if(ST[sol].sum >= x) make(sol, bas, orta, x, t);
    else make(sag, orta+1, son,  x - ST[k].sum, t);
    ST[k].sum = ST[sol].sum + ST[sag].sum;
    return ST[k];
}

int init2(int k, int bas, int son) {
    if(bas == son) return mx[k] = a[bas];
    return mx[k] = max(init2(sag, orta+1, son), init2(sol, bas, orta));
}

int query2(int k, int bas, int son, int x, int y) {
    if(bas > y || son < x) return 0;
    if(x <= bas && son <= y) return mx[k];
    return max(query2(sol, bas, orta, x, y), query2(sag, orta+1, son, x, y));
}

pii update3(int k, int bas, int son, int x, int t) {
    if(bas > x || son < x) return ST3[k];
    if(bas == son) return ST3[k] = mp(t, t != 0);
    update3(sol, bas, orta, x, t);
    update3(sag, orta + 1, son, x, t);
    return ST3[k] = mp(max(ST3[sol].st, ST3[sag].st), ST3[sol].nd + ST3[sag].nd);
}

int take3(int k, int bas, int son) {
    if(bas == son) return ST3[k].nd && ST3[k].st <= R;
    if(ST3[sol].st <= R) return take3(sag, orta+1, son) + ST3[sol].nd;
    return take3(sol, bas, orta);
}

int GetBestPosition(int N, int C, int R, int *K, int *S, int *E) {

    n = N;

    for(int i = 1; i < n; i++) {
        val[i] = 1;
        a[i] = ++K[i-1];
    } ++R; val[n] = 1;

    ::R = R;

//  init(1, 1, n-1);
    init2(1, 1, n);

    vector< pair< pii , int > > vv;

    for(int i = 1; i <= C; i++) {
        int x = S[i-1] + 1,
            y = E[i-1] + 1;
        int xx = 0, yy = 0, ss = 0;
        FOR(j, 1, n) {
            ss += val[j];
            if(ss == y) { yy = j; break; }
        } ss = 0;
        int t = 0;
        FOR(j, 1, n) {
            ss += val[j];
            if(ss == x) { xx = j; break; }
        }
        while(val[xx-1] == 0 && xx > 1) xx--;
        int tt = 0;
        FOR(j, xx, yy) {
            tt += val[j];
            val[j] = 0;
        }
        val[yy] = 1;
//          xx = query(1, 1, n-1, x).st,
//          yy = query(1, 1, n-1, y).nd;
//      make(1, 1, n-1, x, mp(xx, yy));
//      for(int j = y; j > x; j--) {
//          assert(ST[1].sum >= j);
//          update(1, 1, n-1, j);
//      }
        int mx = query2(1, 1, n, xx, yy-1);
        vv.pb(mp(mp(xx, yy-1), mx));
        s[xx].pb(mp(i, mx));
        f[yy-1].pb(mp(i, mx));
    }

    int ans = 0, aaa = 0;

    for(int i = 1; i <= n; i++) {
        foreach(it, s[i]) {
            update3(1, 1, C, it->st, it->nd);
        }
        int cc = take3(1, 1, C);
//      cc = 0;
/*      foreach(it, vv) {
            if(it->st.st <= i && i <= it->st.nd) {
                if(it->nd >= R) break;
                else cc++;
            }
        }
*/      if(cc > ans) { ans = cc; aaa = i - 1; }
        foreach(it, f[i]) {
            update3(1, 1, C, it->st, 0);
        }
    }

    return aaa;
}

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