제출 #985556

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
985556		maomao90	Table Tennis (JOI24_tabletennis)	C++17	0 / 100	1 ms	348 KiB

Main

// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 50;

int t;
int n, m;
int ans[MAXN * MAXN * MAXN];
bool g[MAXN][MAXN];

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> t;
    while (t--) {
        cin >> n >> m;
        REP (i, 0, n * n * n) {
            ans[i] = -1;
        }
        REP (msk, 0, 1 << (2 * n - 2)) {
            if (__builtin_popcount(msk) != n - 1) {
                continue;
            }
            int z = 0;
            vi v;
            REP (i, 0, 2 * n - 2) {
                if (msk >> i & 1 ^ 1) {
                    v.pb(z);
                } else {
                    z++;
                }
            }
            REP (i, 1, n) {
                REP (j, 0, i) {
                    g[i][j] = j >= v[i - 1];
                    g[j][i] = g[i][j] ^ 1;
                }
            }
            int cnt = 0;
            REP (i, 0, n) {
                REP (j, 0, i) {
                    REP (k, 0, j) {
                        if (g[i][j] == g[j][k] && g[j][k] == g[k][i]) {
                            cnt++;
                        }
                    }
                }
            }
            ans[cnt] = msk;
        }
        cout << n << ":";
        REP (i, 0, n * n * n) {
            if (ans[i] != -1) {
                cout << ' ' << i;
            }
        }
        cout << '\n';
        continue;
        if (ans[m] == -1) {
            cout << "No\n";
            continue;
        }
        cout << "Yes\n";
        int msk = ans[m];
        int z = 0;
        vi v;
        REP (i, 0, 2 * n - 2) {
            if (msk >> i & 1 ^ 1) {
                v.pb(z);
            } else {
                z++;
            }
        }
        // 1 + 2 + ... + n - 1 = n * (n - 1) / 2
        REP (msk, 0, 1 << (n * (n - 1) / 2)) {
            int tmsk = msk;
            REP (i, 1, n) {
                REP (j, 0, i) {
                    g[i][j] = tmsk & 1;
                    g[j][i] = g[i][j] ^ 1;
                    tmsk >>= 1;
                }
            }
            int cnt = 0;
            REP (i, 0, n) {
                REP (j, 0, i) {
                    REP (k, 0, j) {
                        if (g[i][j] == g[j][k] && g[j][k] == g[k][i]) {
                            cnt++;
                        }
                    }
                }
            }
            ans[cnt] = msk;
        }
        if (ans[m] == -1) {
            cout << "No\n";
            continue;
        }
        cout << "Yes\n";
        int tmsk = ans[m];
        REP (i, 1, n) {
            REP (j, 0, i) {
                cout << (tmsk & 1);
                tmsk >>= 1;
            }
            cout << '\n';
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:62:30: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   62 |                 if (msk >> i & 1 ^ 1) {
      |                     ~~~~~~~~~^~~
Main.cpp:103:26: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  103 |             if (msk >> i & 1 ^ 1) {
      |                 ~~~~~~~~~^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 4
• Subtask 3: 0 / 23
• Subtask 4: 0 / 30
• Subtask 5: 0 / 15
• Subtask 6: 0 / 23