oj.uz

답안 #400898

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
400898 2021-05-08T19:40:11 Z 12tqian 길고양이 (JOI20_stray) C++17
15 / 100
 67 ms 20836 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 57 ms 16400 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 49 ms 16284 KB Output is correct
4 Correct 65 ms 17532 KB Output is correct
5 Correct 67 ms 17500 KB Output is correct
6 Correct 57 ms 16112 KB Output is correct
7 Correct 54 ms 16184 KB Output is correct
8 Correct 65 ms 16972 KB Output is correct
9 Correct 61 ms 16936 KB Output is correct

Subtask #2
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 16400 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 49 ms 16284 KB Output is correct
4 Correct 65 ms 17532 KB Output is correct
5 Correct 67 ms 17500 KB Output is correct
6 Correct 57 ms 16112 KB Output is correct
7 Correct 54 ms 16184 KB Output is correct
8 Correct 65 ms 16972 KB Output is correct
9 Correct 61 ms 16936 KB Output is correct
10 Correct 52 ms 14204 KB Output is correct
11 Correct 52 ms 14244 KB Output is correct
12 Correct 56 ms 14280 KB Output is correct
13 Correct 53 ms 14212 KB Output is correct
14 Correct 53 ms 14340 KB Output is correct
15 Correct 60 ms 14736 KB Output is correct
16 Correct 59 ms 17072 KB Output is correct

Subtask #3
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 13984 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 48 ms 13852 KB Output is correct
4 Correct 63 ms 15316 KB Output is correct
5 Correct 62 ms 15376 KB Output is correct
6 Correct 52 ms 13936 KB Output is correct
7 Correct 53 ms 14008 KB Output is correct
8 Correct 57 ms 14596 KB Output is correct
9 Correct 57 ms 14656 KB Output is correct
10 Correct 55 ms 14416 KB Output is correct
11 Correct 57 ms 14472 KB Output is correct
12 Correct 55 ms 14312 KB Output is correct
13 Correct 55 ms 14384 KB Output is correct
14 Correct 60 ms 14672 KB Output is correct
15 Correct 62 ms 14732 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 13984 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 48 ms 13852 KB Output is correct
4 Correct 63 ms 15316 KB Output is correct
5 Correct 62 ms 15376 KB Output is correct
6 Correct 52 ms 13936 KB Output is correct
7 Correct 53 ms 14008 KB Output is correct
8 Correct 57 ms 14596 KB Output is correct
9 Correct 57 ms 14656 KB Output is correct
10 Correct 55 ms 14416 KB Output is correct
11 Correct 57 ms 14472 KB Output is correct
12 Correct 55 ms 14312 KB Output is correct
13 Correct 55 ms 14384 KB Output is correct
14 Correct 60 ms 14672 KB Output is correct
15 Correct 62 ms 14732 KB Output is correct
16 Correct 50 ms 12624 KB Output is correct
17 Correct 52 ms 12600 KB Output is correct
18 Correct 54 ms 12364 KB Output is correct
19 Correct 50 ms 12344 KB Output is correct
20 Correct 61 ms 12800 KB Output is correct
21 Correct 53 ms 12504 KB Output is correct
22 Correct 56 ms 14816 KB Output is correct
23 Correct 51 ms 12404 KB Output is correct
24 Correct 52 ms 12288 KB Output is correct

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 888 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 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 55 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 20836 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -