oj.uz

Submission #391899

# Submission time Handle Problem Language Result Execution time Memory
391899 2021-04-20T05:21:59 Z wiwiho Cake (CEOI14_cake) C++14
75.8333 / 100
 2000 ms 43468 KB 
#include <bits/stdc++.h>
 
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define printv(a, b) {\
    for(auto pv : a) b << pv << " ";\
    b << "\n";\
}
 
using namespace std;
 
using pii = pair<int, int>;
 
ostream& operator<<(ostream& o, pii p){
    return o << '(' << p.F << ',' << p.S << ')';
}
bool assertflag = false;
 
void waassert(bool t){
    if(!assertflag || t) return;
    cout << "OAO\n";
    exit(0);
}
 
struct Node{
    int mn = 0, mx = 0, tag = -1, d = -1, sz;
    int l = -1, r = -1;
    int rmn(){
        if(tag == -1) return mn;
        return min(tag, tag + d * (sz - 1));
    }
    int rmx(){
        if(tag == -1) return mx;
        return max(tag, tag + d * (sz - 1));
    }
};
 
struct SegmentTree{
    vector<Node> st;
    int ts = 0;
    int lr, rr;
    void init(int n, int _lr, int _rr){
        st.resize(2 * n);
        lr = _lr;
        rr = _rr;
    }
 
    void push(int id){
        if(st[id].tag == -1) return;
        int lc = st[id].l, rc = st[id].r;
        st[lc].tag = st[id].tag;
        st[rc].tag = st[id].tag + st[id].d * st[lc].sz;
        st[lc].d = st[rc].d = st[id].d;
        st[id].mn = st[id].rmn();
        st[id].mx = st[id].rmx();
        st[id].tag = st[id].d = -1;
    }
 
    int build(int l = -1, int r = -1){
        if(l == -1) l = lr;
        if(r == -1) r = rr;
        int id = ts++;
        st[id].sz = r - l + 1;
        if(l == r) return id;
        int m = (l + r) / 2;
        st[id].l = build(l, m);
        st[id].r = build(m + 1, r);
        return id;
    }
 
    void modify(int l, int r, int f, int d = 0, int L = -1, int R = -1, int id = 0){
        if(L == -1) L = lr;
        if(R == -1) R = rr;
        //cerr << "modify " << l << " " << r << " " << f << " " << d << " " << L << " " << R << "\n";
        //waassert(L <= l && r <= R && l <= r);
        if(l == L && r == R){
            st[id].tag = f;
            st[id].d = d;
            return;
        }
        push(id);
        int M = (L + R) / 2;
        if(r <= M) modify(l, r, f, d, L, M, st[id].l);
        else if(l > M) modify(l, r, f, d, M + 1, R, st[id].r);
        else{
            modify(l, M, f, d, L, M, st[id].l);
            modify(M + 1, r, f + d * (M + 1 - l), d, M + 1, R, st[id].r);
        }
        st[id].mn = min(st[st[id].l].rmn(), st[st[id].r].rmn());
        st[id].mx = max(st[st[id].l].rmx(), st[st[id].r].rmx());
    }
 
    int querymn(int l, int r, int L = -1, int R = -1, int id = 0){
        if(L == -1) L = lr;
        if(R == -1) R = rr;
        waassert(L <= l && r <= R && l <= r);
        if(l == L && r == R) return st[id].rmn();
        push(id);
        int M = (L + R) / 2;
        if(r <= M) return querymn(l, r, L, M, st[id].l);
        else if(l > M) return querymn(l, r, M + 1, R, st[id].r);
        else{
            return min(querymn(l, M, L, M, st[id].l), querymn(M + 1, r, M + 1, R, st[id].r));
        }
    }
    int querymx(int l, int r, int L = -1, int R = -1, int id = 0){
        if(L == -1) L = lr;
        if(R == -1) R = rr;
        waassert(L <= l && r <= R && l <= r);
        if(l == L && r == R) return st[id].rmx();
        push(id);
        int M = (L + R) / 2;
        if(r <= M) return querymx(l, r, L, M, st[id].l);
        else if(l > M) return querymx(l, r, M + 1, R, st[id].r);
        else{
            return max(querymx(l, M, L, M, st[id].l), querymx(M + 1, r, M + 1, R, st[id].r));
        }
    }
};

int n, a;
void assertrange(int l, int r){
    waassert(l <= r && 1 <= l && r <= n);
}
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
    cin >> n >> a;
 
    SegmentTree pos, order;
    pos.init(n, 1, n);
    order.init(n, 1, n);
    pos.build();
    order.build();
 
    vector<int> d(n + 1);
    map<int, int, greater<>> rk;
    for(int i = 1; i <= n; i++){
        cin >> d[i];
        rk[d[i]] = i;
    }
 
    int l = a, r = a;
    pos.modify(a, a, 1);
    order.modify(1, 1, a);
    //printv(d, cerr);
    //printv(rk, cerr);
 
    for(int i = 2; i <= n; i++){
        if(r == n){
            l--;
            pos.modify(l, l, i);
            order.modify(i, i, l);
            //cerr << l << " " << i << "\n";
        }
        else if(l == 1){
            r++;
            pos.modify(r, r, i);
            order.modify(i, i, r);
            //cerr << r << " " << i << "\n";
        }
        else if(d[l - 1] < d[r + 1]){
            l--;
            pos.modify(l, l, i);
            order.modify(i, i, l);
            //cerr << l << " " << i << "\n";
        }
        else{
            r++;
            pos.modify(r, r, i);
            order.modify(i, i, r);
            //cerr << r << " " << i << "\n";
        }
    }
    //cerr << "pos ";
    //for(int i = 1; i <= n; i++) cerr << pos.querymn(i, i) << " ";
    //cerr << "\n";
    //cerr << "order ";
    //for(int i = 1; i <= n; i++) cerr << order.querymn(i, i) << " ";
    //cerr << "\n";
 
    int q;
    cin >> q;
    while(q--){
        char c;
        cin >> c;
        if(c == 'F'){
            int b;
            cin >> b;
            cout << pos.querymn(b, b) - 1 << "\n";
            continue;
        }
        
        int i, e;
        cin >> i >> e;
        //cerr << "start " << i << " " << e << "\n";
        vector<int> tmp;
        for(int j = 0; j < e - 1; j++){
            tmp.eb(rk.begin()->S);
            rk.erase(rk.begin());
        }
        tmp.eb(i);
        rk.erase(d[i]);
        while(!tmp.empty()){
            d[tmp.back()] = rk.empty() ? 1 : rk.begin()->F + 1;
            rk[d[tmp.back()]] = tmp.back();
            tmp.pop_back();
        }
        //printv(rk, cerr);
 
        int now = i;
        int nowpos = pos.querymn(now, now);
        if(nowpos == 1) continue;
        assertflag = true;
        waassert(nowpos != 0);
        assertflag = false;
 
        while(true){
            int l = order.querymn(1, nowpos - 1), r = order.querymx(1, nowpos - 1);
            //cerr << "test " << now << " " << l << " " << r << "\n";
            if(now == l - 1){
                int go = n + 1;
                for(auto it = rk.begin(); it->S != now; it++){
                    if(it->S > r) go = min(go, it->S);
                }
                if(go - 1 > r){
                    //assertrange(r + 1, go - 1);
                    //assertrange(nowpos, nowpos + (go - 1) - (r + 1));
                    pos.modify(r + 1, go - 1, nowpos, 1);
                    order.modify(nowpos, nowpos + (go - 1) - (r + 1), r + 1, 1);
                    nowpos += go - 1 - r;
                }
                pos.modify(now, now, nowpos);
                order.modify(nowpos, nowpos, now);
                nowpos++;
 
                if(go != n + 1) now = go;
                else if(now == 1) break;
                else{
                    pos.modify(1, now - 1, nowpos + now - 2, -1);
                    order.modify(nowpos, n, now - 1, -1);
                    break;
                }
            }
            else{
                int go = 0;
                for(auto it = rk.begin(); it->S != now; it++){
                    if(it->S < l) go = max(go, it->S);
                }
                if(go + 1 < l){
                    //assertrange(go + 1, l - 1);
                    //assertrange(nowpos, nowpos + (l - 1) - (go + 1));
                    pos.modify(go + 1, l - 1, nowpos + (l - 1) - (go + 1), -1);
                    order.modify(nowpos, nowpos + (l - 1) - (go + 1), l - 1, -1);
                    nowpos += l - 1 - go;
                }
                pos.modify(now, now, nowpos);
                order.modify(nowpos, nowpos, now);
                nowpos++;
                if(go != 0) now = go;
                else if(now == n) break;
                else{
                    pos.modify(now + 1, n, nowpos, 1);
                    order.modify(nowpos, n, now + 1, 1);
                    break;
                }
            }
        }
        //cerr << "pos ";
        //for(int i = 1; i <= n; i++) cerr << pos.querymn(i, i) << " ";
        //cerr << "\n";
        //cerr << "order ";
        //for(int i = 1; i <= n; i++) cerr << order.querymn(i, i) << " ";
        //cerr << "\n";
    }
 
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 21 ms 520 KB Output is correct
5 Correct 55 ms 2064 KB Output is correct

Subtask #2
7.5 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1892 ms 2952 KB Output is correct
2 Correct 1417 ms 3108 KB Output is correct
3 Correct 1981 ms 3112 KB Output is correct
4 Correct 1293 ms 3108 KB Output is correct
5 Execution timed out 2081 ms 5352 KB Time limit exceeded
6 Correct 1852 ms 5480 KB Output is correct
7 Execution timed out 2085 ms 5436 KB Time limit exceeded
8 Correct 1421 ms 5436 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 168 ms 17836 KB Output is correct
2 Correct 140 ms 17808 KB Output is correct
3 Correct 128 ms 17624 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 412 ms 42148 KB Output is correct
6 Correct 412 ms 42396 KB Output is correct
7 Correct 283 ms 42048 KB Output is correct

Subtask #4
33.333333 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 1300 KB Output is correct
2 Correct 128 ms 1604 KB Output is correct
3 Correct 333 ms 9352 KB Output is correct
4 Correct 342 ms 9196 KB Output is correct
5 Correct 376 ms 2216 KB Output is correct
6 Correct 575 ms 12520 KB Output is correct
7 Correct 454 ms 3824 KB Output is correct
8 Correct 1193 ms 17348 KB Output is correct
9 Execution timed out 2081 ms 43088 KB Time limit exceeded
10 Correct 1231 ms 3208 KB Output is correct
11 Correct 1465 ms 6876 KB Output is correct
12 Execution timed out 2072 ms 34928 KB Time limit exceeded
13 Execution timed out 2089 ms 43468 KB Time limit exceeded