oj.uz

Submission #490293

# Submission time Handle Problem Language Result Execution time Memory
490293 2021-11-26T19:21:37 Z SirCovidThe19th Cake (CEOI14_cake) C++17
100 / 100
 825 ms 6040 KB 
#include <bits/stdc++.h>
using namespace std;

template<int sz> struct DS{
    int seg[sz * 2];
    void upd(int i, int v){
        seg[i += sz] = v;
        for (i /= 2; i; i /= 2) seg[i] = max(seg[i * 2], seg[i * 2 + 1]); 
    }
    int qry(int l, int r){ 
        int ans = 0;
        for (l += sz, r += sz; l <= r; r /= 2, l /= 2){
            if (l % 2 == 1) ans = max(ans, seg[l++]);
            if (r % 2 == 0) ans = max(seg[r--], ans);
        }
        return ans;
    }
    int walk(int v){
        int i = 1; 
        while (i < sz) i = (seg[i * 2] < v) ? i * 2 + 1 : i * 2;
        return i - sz - 1;
    }
}; 
const int mN = 2.5e5 + 5, mQ = 5e5 + 5;

int n, a, q; pair<int, int> tmp[mN]; DS<(1 << 19)> L, R;

deque<int> w10; int net = mN;

void ins(int pos, int v){
    if (pos < a) L.upd(a - pos, v);
    if (pos > a) R.upd(pos - a, v);
}
int main(){
    cin >> n >> a; 

    for (int i = 1; i <= n; i++) cin >> tmp[i].first, tmp[i].second = i;
    sort(tmp + 1, tmp + n + 1);

    for (int i = 1; i <= n; i++){
        int pos = tmp[i].second, r = i;
        if (i >= n - 9) r += mQ * 2, w10.push_back(pos);
        ins(pos, r);
    }
    cin >> q; L.upd(a, 1e9); R.upd(n - a + 1, 1e9);
    while (q--){
        int pos; char type; cin >> type >> pos;
        if (type == 'E'){
            int e; cin >> e;
            auto it = find(w10.begin(), w10.end(), pos);
            if (it != w10.end()) w10.erase(it);
            w10.insert(w10.end() - e + 1, pos);
            if (w10.size() > 10) ins(w10[0], ++net), w10.pop_front();
            for (int i = 0; i < w10.size(); i++) ins(w10[i], mQ * 2 + i);
        }
        else{
            int ans = pos;
            if (pos < a) ans = R.walk(L.qry(1, a - pos)) + a;
            if (pos > a) ans = a - L.walk(R.qry(1, pos - a));
            cout<<abs(pos - ans)<<"\n";
        }
    }
}

Compilation message

cake.cpp: In function 'int main()':
cake.cpp:54:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |             for (int i = 0; i < w10.size(); i++) ins(w10[i], mQ * 2 + i);
      |                             ~~^~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 7 ms 420 KB Output is correct
5 Correct 17 ms 564 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 510 ms 460 KB Output is correct
2 Correct 505 ms 460 KB Output is correct
3 Correct 514 ms 544 KB Output is correct
4 Correct 661 ms 460 KB Output is correct
5 Correct 550 ms 716 KB Output is correct
6 Correct 580 ms 716 KB Output is correct
7 Correct 515 ms 716 KB Output is correct
8 Correct 708 ms 668 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 2500 KB Output is correct
2 Correct 206 ms 2344 KB Output is correct
3 Correct 203 ms 2356 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 266 ms 4852 KB Output is correct
6 Correct 266 ms 4872 KB Output is correct
7 Correct 249 ms 4724 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 560 KB Output is correct
2 Correct 71 ms 504 KB Output is correct
3 Correct 122 ms 1336 KB Output is correct
4 Correct 122 ms 1364 KB Output is correct
5 Correct 197 ms 736 KB Output is correct
6 Correct 237 ms 1800 KB Output is correct
7 Correct 267 ms 968 KB Output is correct
8 Correct 244 ms 1932 KB Output is correct
9 Correct 825 ms 5960 KB Output is correct
10 Correct 663 ms 1520 KB Output is correct
11 Correct 686 ms 2112 KB Output is correct
12 Correct 797 ms 5332 KB Output is correct
13 Correct 787 ms 6040 KB Output is correct