oj.uz

답안 #400897

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
400897 2021-05-08T19:39:23 Z 12tqian 길고양이 (JOI20_stray) C++17
15 / 100
 67 ms 20748 KB 
#include "Anthony.h"
#include <bits/stdc++.h>

using namespace std;

#define f1r(i, a, b) for (int i = a; i < b; ++i)
#define f0r(i, a) f1r(i, 0, a)
#define each(t, a) for (auto& t : a)

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define f first
#define s second
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

using vi = vector<int>;
using pi = pair<int, int>;
using vpi = vector<pi>;
using ll = long long;

// 0 -> 1 -> 2

vi Mark(int n, int m, int a, int b, vi U, vi V) {
    vector<vi> g(n);
    auto cp = [&](int u, int v) -> pi {
        if (u > v) swap(u, v);
        return mp(u, v);
    };
    map<pi, int> conv;
    vpi ed;
    vi res(m);
    f0r(i, m) {
        int u = U[i];
        int v = V[i];
        conv[cp(u, v)] = i;
        g[u].pb(v);
        g[v].pb(u);
        ed.pb(cp(u, v));
    }
    if (a >= 3) { // bfs work
        vi dist(n, -1);
        list<int> que;
        dist[0] = 0;
        que.pb(0);
        while (!que.empty()) {
            int u = que.front();
            que.pop_front();
            each(v, g[u]) {
                if (dist[v] != -1) continue;
                dist[v] = dist[u] + 1;
                que.push_back(v);
            }
        }
        each(e, ed) {
            int u = e.f;
            int v = e.s;
            int id = conv[cp(u, v)];
            if (dist[u] == dist[v]) {
                res[id] = dist[u] % 3;
            } else {
                if (dist[u] > dist[v]) {
                    swap(u, v);
                }
                res[id] = dist[u] % 3;
            }
        }
    } else {
        vi par(n);
        function<void(int, int)> dfs_precomp = [&](int u, int p) {
            par[u] = p;
            each(v, g[u]) {
                if (v == p) continue;
                dfs_precomp(v, u);
            }
        };
        dfs_precomp(0, -1);
        vi lab(n);
        function<void(int, int, int)> dfs_label = [&](int u, int p, int d) {
            if (u == 0) {
                each(v, g[u]) {
                    if (v == p) continue;
                    lab[v] = 0;
                    dfs_label(v, u, 0);
                }
                return;
            }
            if (sz(g[u]) == 1) return;
            if (sz(g[u]) > 2) {
                each(v, g[u])  {
                    if (v == p) continue;
                    lab[v] = lab[u] ^ 1;
                    dfs_label(v, u, 0);
                }
            } else {
                each(v, g[u]) {
                    if (v == p) continue;
                    if (d == 0 || d == 2 || d == 5) {
                        lab[v] = lab[u] ^ 1;
                    } else {
                        lab[v] = lab[u];
                    }
                    dfs_label(v, u, (d + 1) % 6);
                }
            }
        };
        dfs_label(0, -1, -1);
        f1r(i, 1, n) {
            int id = conv[cp(i, par[i])];
            res[id] = lab[i];
        }
    }
    return res;
}


#include "Catherine.h"
#include <bits/stdc++.h>

using namespace std;

#define f1r(i, a, b) for (int i = a; i < b; ++i)
#define f0r(i, a) f1r(i, 0, a)
#define each(t, a) for (auto& t : a)

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define f first
#define s second
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

using vi = vector<int>;
using pi = pair<int, int>;
using vpi = vector<pi>;
using ll = long long;

namespace {

int a, b;
vi moves; 
vpi seen;
bool oriented = false;

}  // namespace

void Init(int A, int B) {
    ::a = A;
    ::b = B;
}

int MoveT(vi& v) { 
    int x = v[0]; 
    int y = v[1];
    
    pi use = {x, y};
   
    if (sz(moves)) {
        if (moves.back() == 0) use.f++;
        else use.s++;
    }

    seen.pb(use);

    #define R(k) moves.pb(k); return k;
    #define F() if (x) { R(0); } else { R(1); }
    // R is for moving to a color
    // F is if you're on a line, move forward

    if (oriented) { // if you're already oriented
        if (x == 0) {
            R(1);
        } else if (y == 0) {
            R(0);
        }
        if (x > y) {
            R(1);
        } else if (x < y) {
            R(0);
        }
        assert(false);
        R(-1); // shouldn't reach here
    }

    { // checking if you're already at a good place
        if (x == 0 && y == 0) { // dead end leaf node
            R(-1);
        }

        if (sz(moves)) {
            if (moves.back() == 0) x++;
            else y++;
        }
        
        if (x == 0 && y == 1) { // leaf nodes
            oriented = true;
            R(1);
        } else if (y == 0 && x == 1) {
            oriented = true;
            R(0);
        } 
        
        if (x > y) { // you already reached a good place
            oriented = true;
            if (sz(moves)) {
                if (moves.back() == 0) x--;
                else y--;
            }
            if (y == 0) {
                R(-1);
            }
            else {
                R(1);
            } 
        } else if (x < y) {
            oriented = true;
            if (sz(moves)) {
                if (moves.back() == 0) x--;
                else y--;
            }
            if (x == 0) {
                R(-1); 
            } else {
                R(0);
            }
        }

        if (sz(moves)) {
            if (moves.back() == 0) x--;
            else y--;
        }
    }


    int did = sz(moves);

    if (did == 0) { // first move
        F();
    } else if (did == 1) { 
        if (seen[0].f == seen[0].s) { // 0 1, went 0 before
            if (x) { // go 0 if possible
                R(0);
            } else {
                R(-1);
            }
        } else { // same things
            if (moves.back() == 0 && x) {
                R(-1);
            } else if (moves.back() == 1 && y) {
                R(-1);
            } else {
                F();
            }
        }
    } else if (did == 2) {
        if (moves.back() == -1) {
            F();
        } else {
            R(-1);
        }
    } else if (did == 3) {
        if (moves.back() == -1) {
            R(-1);
        } else {
            F();
        }
    } else if (did == 4) {
        if (moves.back() == -1) {
            F();
        } else {
            R(-1);
        }
    } else if (did == 5) {
        R(-1);
    } else if (did == 6) {
        oriented = true;
        vi came; // direction just came from
        vi other; // other direction
        { // came
            if (moves[4] == -1 && moves[5] == -1) {
                came.pb(moves[2]);
                came.pb(moves[3]);
                if (seen[4].f >= 2) {
                    came.pb(0);
                } else if (seen[4].s >= 2) {
                    came.pb(1);
                } else {
                    came.pb(came.back() ^ 1);
                }
            } else {
                came.pb(moves[4]); 
                if (seen[5].f >= 2) {
                    came.pb(0);
                } else if (seen[5].s >= 2) {
                    came.pb(1);
                } else {
                    came.pb(came.back() ^ 1);
                }
            }
        }
        { // other
            if (moves[0] != -1 && moves[1] != -1) {
                other.pb(moves[0]);
                other.pb(moves[1]);
                if (seen[2].f >= 2) {
                    other.pb(0);
                } else if (seen[2].s >= 2) {
                    other.pb(1);
                } else {
                    other.pb(other.back() ^ 1);
                }
            } else {
                other.pb(moves[0]);
                if (seen[1].f >= 2) {
                    other.pb(0);
                } else if (seen[1].s >= 2) {
                    other.pb(1);
                } else {
                    other.pb(other.back() ^ 1);
                }
            }
        }
        vi comb = came;
        reverse(all(comb));
        each(x, other) comb.pb(x);
        vi use;
        int i1 = 0;
        int i2 = 0;
        int sz = sz(comb);
        while (i1 != sz) {
            while (i2 < sz - 1 && comb[i2 + 1] == comb[i2]) ++i2;
            use.pb(i2 - i1 + 1);
            i1 = ++i2;
        }
        int num = 0;
        each(x, use) x += num;
        
        assert(num == 5);

        if (sz(use) == 2) {
            int x = use[0];
            int y = use[1];
            if (x == 2) {
                R(-1);
            } else {
                F();
            } 
        } else if (sz(use) == 3) {
            int x = use[0];
            int y = use[1];
            int z = use[2];
            if (x == 1) {
                if (y == 2) {
                    R(-1);
                } else if (y == 1) {
                    F();
                } else {
                    // assert(false);
                }
            } else if (x == 2) {
                if (y == 2) {
                    F();
                } else {
                    assert(false);
                }
            } else if (x == 3) {
                R(-1);
            }
        }
    } else {
        assert(false);
    }
    while (true) {} // stall time
    assert(false);
    R(-1);
}

int MoveG(vi& y) {
    int a0 = y[0];
    int a1 = y[1];
    int a2 = y[2];
    if (a0 && a1) {
        return 0;
    } else if (a1 && a2) {
        return 1;
    } else if (a2 && a0) {
        return 2;
    } else if (a0) {
        return 0;
    } else if (a1) {
        return 1;
    } else if (a2) {
        return 2;
    }
    return -1;
}

int Move(vi y) {
    if (a >= 3) {
        return MoveG(y);
    } else {
        return MoveT(y);    
    }
}

Compilation message

Catherine.cpp: In function 'int MoveT(vi&)':
Catherine.cpp:227:17: warning: unused variable 'y' [-Wunused-variable]
  227 |             int y = use[1];
      |                 ^
Catherine.cpp:236:17: warning: unused variable 'z' [-Wunused-variable]
  236 |             int z = use[2];
      |                 ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16492 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 48 ms 16448 KB Output is correct
4 Correct 65 ms 17532 KB Output is correct
5 Correct 67 ms 17572 KB Output is correct
6 Correct 57 ms 16208 KB Output is correct
7 Correct 55 ms 16196 KB Output is correct
8 Correct 62 ms 16952 KB Output is correct
9 Correct 61 ms 16908 KB Output is correct

Subtask #2
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16492 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 48 ms 16448 KB Output is correct
4 Correct 65 ms 17532 KB Output is correct
5 Correct 67 ms 17572 KB Output is correct
6 Correct 57 ms 16208 KB Output is correct
7 Correct 55 ms 16196 KB Output is correct
8 Correct 62 ms 16952 KB Output is correct
9 Correct 61 ms 16908 KB Output is correct
10 Correct 51 ms 14224 KB Output is correct
11 Correct 52 ms 14344 KB Output is correct
12 Correct 52 ms 14252 KB Output is correct
13 Correct 52 ms 14160 KB Output is correct
14 Correct 53 ms 14388 KB Output is correct
15 Correct 57 ms 14636 KB Output is correct
16 Correct 61 ms 17176 KB Output is correct

Subtask #3
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 13964 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 47 ms 13788 KB Output is correct
4 Correct 63 ms 15344 KB Output is correct
5 Correct 62 ms 15332 KB Output is correct
6 Correct 52 ms 13972 KB Output is correct
7 Correct 56 ms 13972 KB Output is correct
8 Correct 59 ms 14612 KB Output is correct
9 Correct 61 ms 14684 KB Output is correct
10 Correct 55 ms 14380 KB Output is correct
11 Correct 61 ms 14396 KB Output is correct
12 Correct 55 ms 14416 KB Output is correct
13 Correct 55 ms 14344 KB Output is correct
14 Correct 59 ms 14732 KB Output is correct
15 Correct 60 ms 14604 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 13964 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 47 ms 13788 KB Output is correct
4 Correct 63 ms 15344 KB Output is correct
5 Correct 62 ms 15332 KB Output is correct
6 Correct 52 ms 13972 KB Output is correct
7 Correct 56 ms 13972 KB Output is correct
8 Correct 59 ms 14612 KB Output is correct
9 Correct 61 ms 14684 KB Output is correct
10 Correct 55 ms 14380 KB Output is correct
11 Correct 61 ms 14396 KB Output is correct
12 Correct 55 ms 14416 KB Output is correct
13 Correct 55 ms 14344 KB Output is correct
14 Correct 59 ms 14732 KB Output is correct
15 Correct 60 ms 14604 KB Output is correct
16 Correct 48 ms 12560 KB Output is correct
17 Correct 49 ms 12596 KB Output is correct
18 Correct 54 ms 12276 KB Output is correct
19 Correct 50 ms 12280 KB Output is correct
20 Correct 55 ms 12876 KB Output is correct
21 Correct 57 ms 12832 KB Output is correct
22 Correct 56 ms 14868 KB Output is correct
23 Correct 50 ms 12304 KB Output is correct
24 Correct 51 ms 12332 KB Output is correct

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 876 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 2 ms 876 KB Output is correct
4 Correct 2 ms 876 KB Output is correct
5 Correct 2 ms 880 KB Output is correct
6 Incorrect 2 ms 876 KB Wrong Answer [5]
7 Halted 0 ms 0 KB -

Subtask #6
0 / 71.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 51 ms 20748 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 53 ms 20640 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -