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답안 #400892

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
400892 2021-05-08T19:34:20 Z 12tqian 길고양이 (JOI20_stray) C++17
15 / 100
 66 ms 20796 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;
        }
        if (sz(use) == 2) {
            int u = use[0];
            int v = use[1];
            if (u == 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);
    }
    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:222:17: warning: unused variable 'v' [-Wunused-variable]
  222 |             int v = use[1];
      |                 ^
Catherine.cpp:231:17: warning: unused variable 'z' [-Wunused-variable]
  231 |             int z = use[2];
      |                 ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16328 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 48 ms 16316 KB Output is correct
4 Correct 65 ms 17548 KB Output is correct
5 Correct 64 ms 17508 KB Output is correct
6 Correct 54 ms 16268 KB Output is correct
7 Correct 56 ms 16212 KB Output is correct
8 Correct 63 ms 16908 KB Output is correct
9 Correct 60 ms 16864 KB Output is correct

Subtask #2
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 16328 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 48 ms 16316 KB Output is correct
4 Correct 65 ms 17548 KB Output is correct
5 Correct 64 ms 17508 KB Output is correct
6 Correct 54 ms 16268 KB Output is correct
7 Correct 56 ms 16212 KB Output is correct
8 Correct 63 ms 16908 KB Output is correct
9 Correct 60 ms 16864 KB Output is correct
10 Correct 51 ms 14128 KB Output is correct
11 Correct 53 ms 14144 KB Output is correct
12 Correct 53 ms 14172 KB Output is correct
13 Correct 53 ms 14164 KB Output is correct
14 Correct 53 ms 14380 KB Output is correct
15 Correct 56 ms 14744 KB Output is correct
16 Correct 62 ms 17040 KB Output is correct

Subtask #3
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 14092 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 47 ms 13880 KB Output is correct
4 Correct 61 ms 15380 KB Output is correct
5 Correct 66 ms 15332 KB Output is correct
6 Correct 52 ms 13948 KB Output is correct
7 Correct 52 ms 14040 KB Output is correct
8 Correct 60 ms 14652 KB Output is correct
9 Correct 57 ms 14604 KB Output is correct
10 Correct 55 ms 14348 KB Output is correct
11 Correct 56 ms 14644 KB Output is correct
12 Correct 56 ms 14472 KB Output is correct
13 Correct 55 ms 14392 KB Output is correct
14 Correct 60 ms 14700 KB Output is correct
15 Correct 59 ms 14536 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 14092 KB Output is correct
2 Correct 2 ms 496 KB Output is correct
3 Correct 47 ms 13880 KB Output is correct
4 Correct 61 ms 15380 KB Output is correct
5 Correct 66 ms 15332 KB Output is correct
6 Correct 52 ms 13948 KB Output is correct
7 Correct 52 ms 14040 KB Output is correct
8 Correct 60 ms 14652 KB Output is correct
9 Correct 57 ms 14604 KB Output is correct
10 Correct 55 ms 14348 KB Output is correct
11 Correct 56 ms 14644 KB Output is correct
12 Correct 56 ms 14472 KB Output is correct
13 Correct 55 ms 14392 KB Output is correct
14 Correct 60 ms 14700 KB Output is correct
15 Correct 59 ms 14536 KB Output is correct
16 Correct 49 ms 12684 KB Output is correct
17 Correct 50 ms 12568 KB Output is correct
18 Correct 50 ms 12304 KB Output is correct
19 Correct 51 ms 12340 KB Output is correct
20 Correct 56 ms 12892 KB Output is correct
21 Correct 52 ms 12560 KB Output is correct
22 Correct 63 ms 14836 KB Output is correct
23 Correct 52 ms 12444 KB Output is correct
24 Correct 51 ms 12320 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 872 KB Output is correct
4 Correct 2 ms 876 KB Output is correct
5 Correct 2 ms 1076 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 53 ms 20796 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 20676 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -