oj.uz

답안 #579037

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
579037 2022-06-18T10:23:39 Z wiwiho 3단 점프 (JOI19_jumps) C++14
19 / 100
 4000 ms 35352 KB 
#include <bits/stdc++.h>
#include <bits/extc++.h>

#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define ef(a) emplace_front(a)
#define pob pop_back()
#define pof pop_front()
#define mp(a, b) make_pair(a, b)
#define F first
#define S second
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define tomax(a, b) ((a) = max((a), (b)))
#define tomin(a, b) ((a) = min((a), (b)))
#define topos(a) ((a) = (((a) % MOD + MOD) % MOD))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
    if(pvaspace) b << " "; pvaspace=true;\
    b << pva;\
}\
b << "\n";}

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<ld, ld>;
using tiii = tuple<int, int, int>;

const ll MOD = 1000000007;
const ll MAX = 2147483647;

template<typename A, typename B>
ostream& operator<<(ostream& o, pair<A, B> p){
    return o << '(' << p.F << ',' << p.S << ')';
}

ll ifloor(ll a, ll b){
    if(b < 0) a *= -1, b *= -1;
    if(a < 0) return (a - b + 1) / b;
    else return a / b;
}

ll iceil(ll a, ll b){
    if(b < 0) a *= -1, b *= -1;
    if(a > 0) return (a + b - 1) / b;
    else return a / b;
}

struct Node{
    int v = 0, tag = 0;
};

int n;
vector<Node> st;
#define lc 2 * id + 1
#define rc 2 * id + 2

void addtag(int v, int id){
    st[id].v += v;
    st[id].tag += v;
}

void push(int id){
    addtag(st[id].tag, lc);
    addtag(st[id].tag, rc);
    st[id].tag = 0;
}

void pull(int id){
    st[id].v = max(st[lc].v, st[rc].v);
}

void modify(int l, int r, int v, int L = 1, int R = n, int id = 0){
    if(l <= L && R <= r){
        addtag(v, id);
        return;
    }
    //cerr << l << " " << r << " " << L << " " << R << "\n";
    push(id);
    int M = (L + R) / 2;
    if(r <= M) modify(l, r, v, L, M, lc);
    else if(l > M) modify(l, r, v, M + 1, R, rc);
    else{
        modify(l, r, v, L, M, lc);
        modify(l, r, v, M + 1, R, rc);
    }
    pull(id);
}

int query(int l, int r, int L = 1, int R = n, int id = 0){
    if(l <= L && R <= r){
        return st[id].v;
    }
    push(id);
    int M = (L + R) / 2;
    if(r <= M) return query(l, r, L, M, lc);
    else if(l > M) return query(l, r, M + 1, R, rc);
    else return max(query(l, r, L, M, lc), query(l, r, M + 1, R, rc));
}

int main(){
    StarBurstStream

    cin >> n;

    vector<int> a(n + 1);
    vector<vector<pii>> ev(n + 1);
    deque<int> dq;
    st.resize(4 * n);

    auto add = [&](int i, int j){
        int len = j - i;
        int k = i + 2 * len;
        ev[i].eb(mp(k, a[i] + a[j]));
    };

    for(int i = 1; i <= n; i++){
        cin >> a[i];
        modify(i, i, a[i]);
        
        while(!dq.empty() && a[dq.back()] < a[i]){
            add(dq.back(), i);
            dq.pob;
        }
        if(!dq.empty()) add(dq.back(), i);
        dq.eb(i);
    }

    vector<vector<pii>> qry(n + 1);
    int q;
    cin >> q;
    for(int i = 0; i < q; i++){
        int l, r;
        cin >> l >> r;
        qry[l].eb(mp(r, i));
    }

    map<int, int> mx;
    vector<int> ans(q);
    mx[1] = 0;

    auto upd = [&](int p, int v){
        if(p > n) return;
        //cerr << "upd " << p << " " << v << "\n";

        auto it = mx.upper_bound(p);
        it--;
        if(v <= it->S) return;

        int lp = max(p, it->F);
        int nxt = next(it) == mx.end() ? n + 1 : next(it)->F;
        modify(lp, nxt - 1, v - it->S);
        mx[p] = v;
        it = mx.upper_bound(p);

        while(it != mx.end() && it->S <= v){
            nxt = next(it) == mx.end() ? n + 1 : next(it)->F;
            modify(it->F, nxt - 1, v - it->S);
            mx[it->F] = v;
            it++;
        }
        //printv(mx, cerr);
    };

    for(int i = n; i >= 1; i--){

        for(pii t : ev[i]){
            upd(t.F, t.S);
        }

        for(pii t : qry[i]){
            int r, id;
            tie(r, id) = t;
            ans[id] = query(i, r);
        }
    }

    for(int i : ans) cout << i << "\n";

    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 233 ms 19540 KB Output is correct
12 Correct 226 ms 19348 KB Output is correct
13 Correct 2569 ms 19408 KB Output is correct
14 Correct 250 ms 19508 KB Output is correct
15 Correct 254 ms 19540 KB Output is correct
16 Correct 295 ms 18820 KB Output is correct
17 Correct 255 ms 18796 KB Output is correct
18 Correct 258 ms 18708 KB Output is correct
19 Correct 319 ms 19368 KB Output is correct

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1834 ms 35352 KB Output is correct
2 Correct 221 ms 34092 KB Output is correct
3 Execution timed out 4034 ms 26148 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 233 ms 19540 KB Output is correct
12 Correct 226 ms 19348 KB Output is correct
13 Correct 2569 ms 19408 KB Output is correct
14 Correct 250 ms 19508 KB Output is correct
15 Correct 254 ms 19540 KB Output is correct
16 Correct 295 ms 18820 KB Output is correct
17 Correct 255 ms 18796 KB Output is correct
18 Correct 258 ms 18708 KB Output is correct
19 Correct 319 ms 19368 KB Output is correct
20 Correct 1834 ms 35352 KB Output is correct
21 Correct 221 ms 34092 KB Output is correct
22 Execution timed out 4034 ms 26148 KB Time limit exceeded
23 Halted 0 ms 0 KB -