oj.uz

답안 #763460

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
763460 2023-06-22T10:46:56 Z keta_tsimakuridze 3단 점프 (JOI19_jumps) C++14
46 / 100
 397 ms 37332 KB 
#include<bits/stdc++.h>
#define f first
#define s second
#define int long long
#define pii pair<int,int>
using namespace std;
const int N = 2e5 + 5, mod = 1e9 + 7; // !
pair<int,int> t[4 * N];
int lz[4 * N], a[N];
vector<int> x[N];
vector<pair<int,int>> qry[N];
void build(int u, int l, int r) {
    if(l == r) {
        t[u] = {-0, a[r]};
        return;
    }
    int mid = (l + r) / 2;
    build(2 * u, l, mid); build(2 * u + 1, mid + 1, r);
    t[u] = {max(t[2 * u].f, t[2 * u + 1].f), max(t[2 * u].s, t[2 * u + 1].s)};
}
void push(int u, int l, int r) {
    t[u].f = max(t[u].f, lz[u] + t[u].s);
    if(l != r) {
        lz[2 * u] = max(lz[2 * u], lz[u]);
        lz[2 * u + 1] = max(lz[2 * u + 1], lz[u]);
    }
    lz[u] = 0;
}
void upd(int u, int st,int en, int l, int r, int v) {
    if(lz[u]) push(u, l, r);
    if(l > en || r < st) return;
    if(st <= l && r <= en) {
        lz[u] = v;
        push(u, l, r);
        return;
    }
    int mid = (l + r) / 2;
    upd(2 * u, st, en, l, mid, v); upd(2 * u + 1, st, en, mid + 1, r, v);
    t[u] = {max(t[2 * u].f, t[2 * u + 1].f), max(t[2 * u].s, t[2 * u + 1].s)};
}
int get(int u, int st, int en, int l, int r) {
    if(lz[u]) push(u ,l ,r);
    if(l > en || r < st) return 0;
    if(st <= l && r <= en) return t[u].f;
    int mid = (l + r) / 2;
    return max(get(2 * u, st, en, l, mid), get(2 * u + 1, st, en, mid + 1, r));
}
main(){
    int n;
    cin >> n;
    stack<int> st;
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        while(st.size() && a[st.top()] < a[i]) st.pop();
        if(st.size()) x[st.top()].push_back(i);
        st.push(i);
    }
    while(st.size()) st.pop();
    for(int i = n; i >= 1; i--) {
        while(st.size() && a[st.top()] < a[i]) st.pop();
        if(st.size()) x[i].push_back(st.top());
        st.push(i);
    }
    int q; cin >> q;
    vector<int> ans(q +2);
    for(int i = 1; i <= q; i++) {
        int l, r;
        cin >> l >> r;
        qry[l].push_back({i, r});
    }
    build(1, 1, n);
    for(int l = n; l >= 1; l--) {
        for(int j = 0; j < x[l].size(); j++) {
            int r = x[l][j];
            upd(1, 2 * r - l, n, 1, n, a[l] + a[r]);
//            cout << 2 * r - l << " __ " << n << " " << a[l] + a[r] << endl;
        }
        for(int i = 0; i < qry[l].size(); i++) {
            ans[qry[l][i].f] = get(1, l, qry[l][i].s, 1, n);
        }
    }
    for(int i = 1; i <= q; i++) cout << ans[i] << " ";
 }

Compilation message

jumps.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main(){
      | ^~~~
jumps.cpp: In function 'int main()':
jumps.cpp:73:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int j = 0; j < x[l].size(); j++) {
      |                        ~~^~~~~~~~~~~~~
jumps.cpp:78:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |         for(int i = 0; i < qry[l].size(); i++) {
      |                        ~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 4 ms 9684 KB Output is correct
4 Correct 5 ms 9656 KB Output is correct
5 Correct 5 ms 9636 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9744 KB Output is correct
9 Correct 4 ms 9704 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 4 ms 9684 KB Output is correct
4 Correct 5 ms 9656 KB Output is correct
5 Correct 5 ms 9636 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9744 KB Output is correct
9 Correct 4 ms 9704 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 379 ms 37332 KB Output is correct
12 Correct 384 ms 37200 KB Output is correct
13 Correct 387 ms 37324 KB Output is correct
14 Correct 373 ms 37224 KB Output is correct
15 Correct 373 ms 37244 KB Output is correct
16 Correct 397 ms 36768 KB Output is correct
17 Correct 372 ms 36764 KB Output is correct
18 Correct 386 ms 36544 KB Output is correct
19 Correct 380 ms 37264 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 179 ms 32704 KB Output is correct
2 Correct 112 ms 33184 KB Output is correct
3 Correct 108 ms 33208 KB Output is correct
4 Correct 210 ms 32700 KB Output is correct
5 Correct 173 ms 32792 KB Output is correct
6 Correct 145 ms 32148 KB Output is correct
7 Correct 151 ms 32172 KB Output is correct
8 Correct 138 ms 32036 KB Output is correct
9 Correct 164 ms 32368 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 4 ms 9684 KB Output is correct
4 Correct 5 ms 9656 KB Output is correct
5 Correct 5 ms 9636 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9744 KB Output is correct
9 Correct 4 ms 9704 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 379 ms 37332 KB Output is correct
12 Correct 384 ms 37200 KB Output is correct
13 Correct 387 ms 37324 KB Output is correct
14 Correct 373 ms 37224 KB Output is correct
15 Correct 373 ms 37244 KB Output is correct
16 Correct 397 ms 36768 KB Output is correct
17 Correct 372 ms 36764 KB Output is correct
18 Correct 386 ms 36544 KB Output is correct
19 Correct 380 ms 37264 KB Output is correct
20 Correct 179 ms 32704 KB Output is correct
21 Correct 112 ms 33184 KB Output is correct
22 Correct 108 ms 33208 KB Output is correct
23 Correct 210 ms 32700 KB Output is correct
24 Correct 173 ms 32792 KB Output is correct
25 Correct 145 ms 32148 KB Output is correct
26 Correct 151 ms 32172 KB Output is correct
27 Correct 138 ms 32036 KB Output is correct
28 Correct 164 ms 32368 KB Output is correct
29 Runtime error 78 ms 32092 KB Execution killed with signal 11
30 Halted 0 ms 0 KB -