oj.uz

답안 #400905

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
400905 2021-05-08T19:51:16 Z 12tqian 길고양이 (JOI20_stray) C++17
15 / 100
 67 ms 17500 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
        assert(x || y);

        if (x == 0) {
            R(1);
        } else if (y == 0) {
            R(0);
        }

        if (sz(moves)) {
            if (moves.back() == 0) x++;
            else y++;
        }
        
        if (x > y) {
            assert(y == 1);
            R(1);
        } else if (x < y) {
            assert(x == 1);
            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
            oriented = true;
            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:239:17: warning: unused variable 'y' [-Wunused-variable]
  239 |             int y = use[1];
      |                 ^
Catherine.cpp:248:17: warning: unused variable 'z' [-Wunused-variable]
  248 |             int z = use[2];
      |                 ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16396 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 48 ms 16272 KB Output is correct
4 Correct 67 ms 17496 KB Output is correct
5 Correct 66 ms 17500 KB Output is correct
6 Correct 54 ms 16136 KB Output is correct
7 Correct 54 ms 16180 KB Output is correct
8 Correct 61 ms 16896 KB Output is correct
9 Correct 63 ms 16784 KB Output is correct

Subtask #2
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16396 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 48 ms 16272 KB Output is correct
4 Correct 67 ms 17496 KB Output is correct
5 Correct 66 ms 17500 KB Output is correct
6 Correct 54 ms 16136 KB Output is correct
7 Correct 54 ms 16180 KB Output is correct
8 Correct 61 ms 16896 KB Output is correct
9 Correct 63 ms 16784 KB Output is correct
10 Correct 54 ms 14448 KB Output is correct
11 Correct 52 ms 14328 KB Output is correct
12 Correct 51 ms 14184 KB Output is correct
13 Correct 51 ms 14264 KB Output is correct
14 Correct 52 ms 14332 KB Output is correct
15 Correct 57 ms 14768 KB Output is correct
16 Correct 63 ms 17144 KB Output is correct

Subtask #3
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 13972 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Correct 47 ms 13844 KB Output is correct
4 Correct 66 ms 15296 KB Output is correct
5 Correct 63 ms 15264 KB Output is correct
6 Correct 54 ms 14064 KB Output is correct
7 Correct 52 ms 13968 KB Output is correct
8 Correct 57 ms 14716 KB Output is correct
9 Correct 57 ms 14624 KB Output is correct
10 Correct 56 ms 14356 KB Output is correct
11 Correct 55 ms 14272 KB Output is correct
12 Correct 56 ms 14396 KB Output is correct
13 Correct 56 ms 14340 KB Output is correct
14 Correct 61 ms 14604 KB Output is correct
15 Correct 59 ms 14620 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 13972 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Correct 47 ms 13844 KB Output is correct
4 Correct 66 ms 15296 KB Output is correct
5 Correct 63 ms 15264 KB Output is correct
6 Correct 54 ms 14064 KB Output is correct
7 Correct 52 ms 13968 KB Output is correct
8 Correct 57 ms 14716 KB Output is correct
9 Correct 57 ms 14624 KB Output is correct
10 Correct 56 ms 14356 KB Output is correct
11 Correct 55 ms 14272 KB Output is correct
12 Correct 56 ms 14396 KB Output is correct
13 Correct 56 ms 14340 KB Output is correct
14 Correct 61 ms 14604 KB Output is correct
15 Correct 59 ms 14620 KB Output is correct
16 Correct 49 ms 12548 KB Output is correct
17 Correct 50 ms 12432 KB Output is correct
18 Correct 50 ms 12340 KB Output is correct
19 Correct 50 ms 12292 KB Output is correct
20 Correct 57 ms 12836 KB Output is correct
21 Correct 52 ms 12716 KB Output is correct
22 Correct 56 ms 14868 KB Output is correct
23 Correct 50 ms 12468 KB Output is correct
24 Correct 51 ms 12308 KB Output is correct

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 884 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 876 KB Output is correct
6 Runtime error 3 ms 1260 KB Execution killed with signal 6
7 Halted 0 ms 0 KB -

Subtask #6
0 / 71.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 12216 KB Output is correct
2 Incorrect 49 ms 13508 KB Wrong Answer [4]
3 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 12300 KB Output is correct
2 Correct 54 ms 13692 KB Output is correct
3 Correct 2 ms 496 KB Output is correct
4 Correct 43 ms 12084 KB Output is correct
5 Correct 65 ms 16000 KB Output is correct
6 Incorrect 50 ms 14716 KB Wrong Answer [4]
7 Halted 0 ms 0 KB -