oj.uz

답안 #481795

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
481795 2021-10-21T23:41:32 Z hidden1 유괴 2 (JOI17_abduction2) C++14
100 / 100
 3049 ms 267748 KB 
#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#ifndef LOCAL
#define cerr if(false) cerr
#endif
#define endl "\n"
#define all(x) (x).begin(), (x).end()
#define forn(i, n) for(ll i = 0; i < n; i ++)
#define revn(i, n) for(ll i = n - 1; i >= 0; i --)
typedef long long ll;
template<class T, template<class T2, class A=allocator<T2> > class cont> inline ostream &operator <<(ostream &out, const cont<T> &x) { for(const auto &it : x) { out << it << " ";} return out;}
template<class T, template<class T2, class A=allocator<T2> > class cont> inline istream &operator >>(istream &in, cont<T> &x) { for(auto &it : x) { in >> it;} return in;}
template<class T, class T2> inline ostream &operator <<(ostream &out, const pair<T, T2> &x) { out << x.first << " " << x.second; return out;}
template<class T, class T2> inline istream &operator >>(istream &in, pair<T, T2> &x) { in >> x.first >> x.second; return in;}
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;

const ll MAX_N = 1e5 + 10, MAX_LOG = 20;
ll a[MAX_N], b[MAX_N];
ll n, m, q;
map<pair<ll, ll>, ll> dp[4];
ll rmqa[MAX_N][MAX_LOG], rmqb[MAX_N][MAX_LOG];

void prec() {
    forn(i, n) {
        rmqa[i][0] = a[i];
    }
    for(int l = 1; l < MAX_LOG; l ++) {
        forn(i, n) {
            rmqa[i][l] = rmqa[i][l - 1];
            if(i + (1 << (l - 1)) < n) {
                chkmax(rmqa[i][l], rmqa[i + (1 << (l - 1))][l - 1]);
            }
        }
    }

    forn(i, m) {
        rmqb[i][0] = b[i];
    }
    for(int l = 1; l < MAX_LOG; l ++) {
        forn(i, m) {
            rmqb[i][l] = rmqb[i][l - 1];
            if(i + (1 << (l - 1)) < m) {
                chkmax(rmqb[i][l], rmqb[i + (1 << (l - 1))][l - 1]);
            }
        }
    }
}

ll solve(ll x, ll y, ll dir) {
    cerr << x << " " << y << " " << dir << endl;

    if(x < 0 || y < 0 || x >= n || y >= m) {
        while(true) {

        }
    }

    if(dp[dir].find({x, y}) != dp[dir].end()) {
        return dp[dir][{x, y}];
    }

    if(dir == 0) { // Right;
        ll nowCost = a[x];
        cerr << nowCost << endl;
        ll nxt = y;
        revn(l, MAX_LOG) {
            if(nowCost > rmqb[nxt][l]) {
                nxt += (1 << l);
            }
            if(nxt >= m) {
                return dp[dir][{x, y}] = m - 1 - y;
            }
        }
        return dp[dir][{x, y}] = nxt - y + max(solve(x, nxt, 1), solve(x, nxt, 3));
    } else 
    if(dir == 1) { // Down;
        ll nowCost = b[y];
        cerr << nowCost << endl;
        ll nxt = x;
        revn(l, MAX_LOG) {
            if(nowCost > rmqa[nxt][l]) {
                nxt += (1 << l);
            }
            if(nxt >= n) {
                return dp[dir][{x, y}] = n - 1 - x;
            }
        }
        cerr << "going to " << nxt << endl;
        return dp[dir][{x, y}] = nxt - x + max(solve(nxt, y, 0), solve(nxt, y, 2));
    } else 
    if(dir == 2) { // Left;
        ll nowCost = a[x];
        cerr << nowCost << endl;
        ll nxt = y;
        revn(l, MAX_LOG) {
            if(nxt - (1 << l) + 1 < 0) {continue;}
            if(nowCost > rmqb[nxt - (1 << l) + 1][l]) {
                nxt -= (1 << l);
            }
            if(nxt < 0) {
                return dp[dir][{x, y}] = y;
            }
        }
        return dp[dir][{x, y}] = y - nxt + max(solve(x, nxt, 1), solve(x, nxt, 3));
    } else 
    if(dir == 3) { // Up;
        ll nowCost = b[y];
        cerr << nowCost << endl;
        ll nxt = x;
        revn(l, MAX_LOG) {
            if(nxt - (1 << l) + 1 < 0) {continue;}
            if(nowCost > rmqa[nxt - (1 << l) + 1][l]) {
                nxt -= (1 << l);
            }
            if(nxt < 0) {
                return dp[dir][{x, y}] = x;
            }
        }
        return dp[dir][{x, y}] = x - nxt + max(solve(nxt, y, 2), solve(nxt, y, 0));
    } 
}

signed main() {
    // ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    cin >> n >> m >> q;
    forn(i, n) {
        cin >> a[i];
    }
    forn(i, m) {
        cin >> b[i];
    }   
    prec();

    while(q --) {
        ll x, y;
        cin >> x >> y;
        x --;
        y --;
        ll ret = 0;
        if(x != n - 1) {
            chkmax(ret, solve(x + 1, y, 1));
        }
        if(x != 0) {
            chkmax(ret, solve(x - 1, y, 3));
        }
        if(y != m - 1) {
            chkmax(ret, solve(x, y + 1, 0));
        }
        if(y != 0) {
            chkmax(ret, solve(x, y - 1, 2));
        }
        cout << ret + 1 << endl;
    }

    return 0;

    forn(dir, 4) {
        cout << dir << endl;
        for(auto it : dp[dir]) {
            cout << "[" << it.first << "] " << it.second << endl;
        }
    }

    return 0;
}

Compilation message

abduction2.cpp: In function 'll solve(ll, ll, ll)':
abduction2.cpp:125:1: warning: control reaches end of non-void function [-Wreturn-type]
  125 | }
      | ^

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 220 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 296 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 220 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 296 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 2 ms 972 KB Output is correct
13 Correct 2 ms 972 KB Output is correct
14 Correct 2 ms 972 KB Output is correct
15 Correct 2 ms 972 KB Output is correct
16 Correct 2 ms 972 KB Output is correct
17 Correct 2 ms 972 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 4 ms 1228 KB Output is correct
20 Correct 6 ms 1484 KB Output is correct
21 Correct 6 ms 1356 KB Output is correct
22 Correct 8 ms 1868 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 220 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 296 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 2 ms 972 KB Output is correct
13 Correct 2 ms 972 KB Output is correct
14 Correct 2 ms 972 KB Output is correct
15 Correct 2 ms 972 KB Output is correct
16 Correct 2 ms 972 KB Output is correct
17 Correct 2 ms 972 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 4 ms 1228 KB Output is correct
20 Correct 6 ms 1484 KB Output is correct
21 Correct 6 ms 1356 KB Output is correct
22 Correct 8 ms 1868 KB Output is correct
23 Correct 50 ms 17720 KB Output is correct
24 Correct 54 ms 17604 KB Output is correct
25 Correct 50 ms 17636 KB Output is correct
26 Correct 49 ms 17692 KB Output is correct
27 Correct 49 ms 17604 KB Output is correct
28 Correct 70 ms 25304 KB Output is correct
29 Correct 49 ms 18772 KB Output is correct
30 Correct 143 ms 28872 KB Output is correct
31 Correct 181 ms 32240 KB Output is correct
32 Correct 54 ms 18116 KB Output is correct
33 Correct 76 ms 21120 KB Output is correct

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1228 KB Output is correct
2 Correct 5 ms 1228 KB Output is correct
3 Correct 5 ms 1240 KB Output is correct
4 Correct 5 ms 1288 KB Output is correct
5 Correct 5 ms 1228 KB Output is correct
6 Correct 3 ms 1356 KB Output is correct
7 Correct 3 ms 1228 KB Output is correct
8 Correct 8 ms 1788 KB Output is correct
9 Correct 9 ms 1820 KB Output is correct
10 Correct 9 ms 1816 KB Output is correct
11 Correct 11 ms 1996 KB Output is correct

Subtask #5
56.0 / 56.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 220 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 296 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 2 ms 972 KB Output is correct
13 Correct 2 ms 972 KB Output is correct
14 Correct 2 ms 972 KB Output is correct
15 Correct 2 ms 972 KB Output is correct
16 Correct 2 ms 972 KB Output is correct
17 Correct 2 ms 972 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 4 ms 1228 KB Output is correct
20 Correct 6 ms 1484 KB Output is correct
21 Correct 6 ms 1356 KB Output is correct
22 Correct 8 ms 1868 KB Output is correct
23 Correct 50 ms 17720 KB Output is correct
24 Correct 54 ms 17604 KB Output is correct
25 Correct 50 ms 17636 KB Output is correct
26 Correct 49 ms 17692 KB Output is correct
27 Correct 49 ms 17604 KB Output is correct
28 Correct 70 ms 25304 KB Output is correct
29 Correct 49 ms 18772 KB Output is correct
30 Correct 143 ms 28872 KB Output is correct
31 Correct 181 ms 32240 KB Output is correct
32 Correct 54 ms 18116 KB Output is correct
33 Correct 76 ms 21120 KB Output is correct
34 Correct 5 ms 1228 KB Output is correct
35 Correct 5 ms 1228 KB Output is correct
36 Correct 5 ms 1240 KB Output is correct
37 Correct 5 ms 1288 KB Output is correct
38 Correct 5 ms 1228 KB Output is correct
39 Correct 3 ms 1356 KB Output is correct
40 Correct 3 ms 1228 KB Output is correct
41 Correct 8 ms 1788 KB Output is correct
42 Correct 9 ms 1820 KB Output is correct
43 Correct 9 ms 1816 KB Output is correct
44 Correct 11 ms 1996 KB Output is correct
45 Correct 55 ms 18208 KB Output is correct
46 Correct 59 ms 18328 KB Output is correct
47 Correct 54 ms 18244 KB Output is correct
48 Correct 58 ms 18248 KB Output is correct
49 Correct 53 ms 18268 KB Output is correct
50 Correct 81 ms 25440 KB Output is correct
51 Correct 80 ms 26112 KB Output is correct
52 Correct 235 ms 37316 KB Output is correct
53 Correct 222 ms 36336 KB Output is correct
54 Correct 231 ms 35288 KB Output is correct
55 Correct 424 ms 44996 KB Output is correct
56 Correct 3049 ms 267748 KB Output is correct
57 Correct 721 ms 82272 KB Output is correct
58 Correct 661 ms 79044 KB Output is correct
59 Correct 645 ms 78652 KB Output is correct