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답안 #834922

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
834922 2023-08-23T02:00:08 Z maomao90 3단 점프 (JOI19_jumps) C++17
32 / 100
 4000 ms 4724 KB 
// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 500005;

int n;
int a[MAXN];
int q;
int mx[MAXN];

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> n;
    REP (i, 1, n + 1) {
        cin >> a[i];
    }
    cin >> q;
    REP (i, 1, q + 1) {
        int l, r; cin >> l >> r;
        REP (j, l, r + 1) {
            mx[j] = -INF;
        }
        vi stk;
        REP (j, l, r + 1) {
            while (!stk.empty() && a[stk.back()] < a[j]) {
                // c - j = j - stk.back()
                // c = 2 * j - stk.back()
                mxto(mx[2 * j - stk.back()], a[j] + a[stk.back()]);
                stk.pop_back();
            }
            if (!stk.empty()) {
                mxto(mx[2 * j - stk.back()], a[j] + a[stk.back()]);
            }
            stk.pb(j);
        }
        stk.clear();
        RREP (j, r, l) {
            while (!stk.empty() && a[stk.back()] < a[j]) {
                // c - stk.back() = stk.back() - j
                // c = 2 * stk.back() - j
                mxto(mx[2 * stk.back() - j], a[j] + a[stk.back()]);
                stk.pop_back();
            }
            if (!stk.empty()) {
                mxto(mx[2 * stk.back() - j], a[j] + a[stk.back()]);
            }
            stk.pb(j);
        }
        ll ans = 0;
        REP (j, l + 1, r + 1) {
            mxto(mx[j], mx[j - 1]);
            mxto(ans, (ll) a[j] + mx[j]);
        }
        cout << ans << '\n';
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Execution timed out 4046 ms 2640 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 1832 KB Output is correct
2 Correct 17 ms 4716 KB Output is correct
3 Correct 17 ms 4724 KB Output is correct
4 Correct 22 ms 3512 KB Output is correct
5 Correct 22 ms 3532 KB Output is correct
6 Correct 19 ms 2900 KB Output is correct
7 Correct 18 ms 2912 KB Output is correct
8 Correct 18 ms 2848 KB Output is correct
9 Correct 20 ms 3168 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Execution timed out 4046 ms 2640 KB Time limit exceeded
12 Halted 0 ms 0 KB -