oj.uz

답안 #259028

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
259028 2020-08-07T04:50:19 Z 반딧불(#5071) 역사적 조사 (JOI14_historical) C++17
40 / 100
 4000 ms 7148 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

using namespace std;

typedef long long ll;
int sqrtN;

struct Query{
    int l, r, idx;
    Query(){}
    Query(int l, int r, int idx): l(l), r(r), idx(idx){}

    bool operator<(const Query &tmp)const{
        if(l/sqrtN != tmp.l/sqrtN) return l < tmp.l;
        return r < tmp.r;
    }
};

int n, q, k;
ll arr[100002];
vector<Query> vec;
ll cnt[100002];
ll ans[100002];
vector<ll> v;

ll tree[400002];
inline void update(int i, int l, int r, int idx, ll val){
    if(l==r){
        tree[i] += val;
        return;
    }
    int m = (l+r)>>1;
    if(idx<=m) update(i*2, l, m, idx, val);
    else update(i*2+1, m+1, r, idx, val);
    tree[i] = max(tree[i*2], tree[i*2+1]);
}

inline void removeNum(ll x){
    update(1, 0, k-1, x, -v[x]);
}
inline void addNum(ll x){
    update(1, 0, k-1, x, v[x]);
}

void renumber(){
    for(int i=0; i<n; i++) v.push_back(arr[i]);
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(), v.end()), v.end());
    for(int i=0; i<n; i++) arr[i] = lower_bound(v.begin(), v.end(), arr[i]) - v.begin();
    k = (int)v.size();
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> q;
    sqrtN = ceil(sqrt(n * log(n)));
    for(int i=0; i<n; i++) cin >> arr[i];
    renumber();
    for(int i=1; i<=q; i++){
        int l, r;
        cin >> l >> r;
        l--, r--;
        vec.push_back(Query(l, r, i));
    }
    sort(vec.begin(), vec.end());

    int s = 0, e = -1;
    for(int i=0; i<q; i++){
        Query tmp = vec[i];
        int l = tmp.l, r = tmp.r, idx = tmp.idx;
        while(e < r) addNum(arr[++e]);
        while(s > l) addNum(arr[--s]);
        while(e > r) removeNum(arr[e--]);
        while(s < l) removeNum(arr[s++]);
        ans[idx] = tree[1];
    }

    for(int i=1; i<=q; i++){
        cout << ans[i] << '\n';
    }
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 10 ms 512 KB Output is correct
6 Correct 17 ms 640 KB Output is correct
7 Correct 19 ms 640 KB Output is correct
8 Correct 14 ms 640 KB Output is correct
9 Correct 13 ms 640 KB Output is correct
10 Correct 27 ms 648 KB Output is correct
11 Correct 26 ms 768 KB Output is correct
12 Correct 25 ms 768 KB Output is correct
13 Correct 27 ms 760 KB Output is correct
14 Correct 24 ms 768 KB Output is correct
15 Correct 25 ms 768 KB Output is correct
16 Correct 22 ms 704 KB Output is correct
17 Correct 7 ms 768 KB Output is correct
18 Correct 25 ms 768 KB Output is correct
19 Correct 30 ms 760 KB Output is correct
20 Correct 28 ms 760 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 6 ms 768 KB Output is correct
9 Correct 13 ms 1024 KB Output is correct
10 Correct 9 ms 1408 KB Output is correct
11 Correct 69 ms 4972 KB Output is correct
12 Correct 36 ms 2300 KB Output is correct
13 Correct 63 ms 2928 KB Output is correct
14 Correct 99 ms 5232 KB Output is correct
15 Correct 123 ms 6624 KB Output is correct
16 Correct 90 ms 6256 KB Output is correct
17 Correct 39 ms 3056 KB Output is correct
18 Correct 72 ms 4848 KB Output is correct
19 Correct 83 ms 7148 KB Output is correct
20 Correct 41 ms 4976 KB Output is correct

Subtask #4
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 41 ms 1020 KB Output is correct
2 Correct 180 ms 1396 KB Output is correct
3 Correct 472 ms 1980 KB Output is correct
4 Correct 853 ms 2856 KB Output is correct
5 Correct 1242 ms 3208 KB Output is correct
6 Correct 1443 ms 3696 KB Output is correct
7 Correct 1350 ms 4436 KB Output is correct
8 Correct 845 ms 5092 KB Output is correct
9 Correct 517 ms 5612 KB Output is correct
10 Correct 210 ms 5848 KB Output is correct
11 Correct 768 ms 5868 KB Output is correct
12 Correct 2033 ms 5732 KB Output is correct
13 Correct 3420 ms 5868 KB Output is correct
14 Execution timed out 4066 ms 5092 KB Time limit exceeded
15 Halted 0 ms 0 KB -