Submission #403821

#	Time	Username	Problem	Language	Result	Execution time	Memory
403821		Victor	Triangles (CEOI18_tri)	C++17	0 / 100	3078 ms	204 KiB

tri

#include <bits/stdc++.h>

#include "trilib.h"

using namespace std;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define per(i, a, b) for (int i = b - 1; i >= (a); --i)
#define trav(a, x) for (auto &a : x)

#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back

#define umap unordered_map
#define uset unordered_set

typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef long long ll;

const int INF = 1000000007;

vi fibs;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    int n=get_n();
    if (50 < n) return 0;

    int arr[n][n][n];
    rep(i, 0, n) rep(j, 0, n) {
        if (i == j) continue;
        rep(k, 0, n) {
            if (i == k || j == k) continue;
            arr[i][j][k] = is_clockwise(i + 1, j + 1, k + 1);
        }
    }

    int city = 0, layer[n], cur = 0;
    memset(layer, -1, n * 4);

    while (1) {
        if (layer[city] != -1) {
            give_answer(cur - layer[city]);
            break;
        }
        layer[city] = cur++;

        int nxt = -1;
        rep(j, 0, n) {
            rep(k, 0, n) {
                if (j == city || k == city || j == k) continue;
                if (!arr[city][j][k]) {
                    nxt = j;
                    break;
                }
            }
            if (nxt != -1) break;
        }

        int cnt=0;

        bool stop = 0;
        while (!stop) {
            ++cnt;
            stop = 1;
            rep(k, 0, n) {
                if (k == city || k == nxt) continue;
                if (!arr[city][k][nxt]) {
                    nxt = k;
                    stop=0;
                    break;
                }
            }
        }
        city = nxt;
    }

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25