結果
| 問題 | No.3488 距離の公理 |
| コンテスト | |
| ユーザー |
yamate11
|
| 提出日時 | 2026-04-03 21:25:28 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 2,756 bytes |
| 記録 | |
| コンパイル時間 | 3,351 ms |
| コンパイル使用メモリ | 336,828 KB |
| 実行使用メモリ | 6,400 KB |
| 最終ジャッジ日時 | 2026-04-03 21:25:40 |
| 合計ジャッジ時間 | 3,430 ms |
|
ジャッジサーバーID (参考情報) |
judge5_0 / judge4_0 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 24 |
ソースコード
#include <bits/stdc++.h>
#include <cassert>
using namespace std;
using ll = long long int;
using u64 = unsigned long long;
using pll = pair<ll, ll>;
// #include <atcoder/all>
// using namespace atcoder;
#define REP(i, a, b) for (ll i = (a); i < (b); i++)
#define REPrev(i, a, b) for (ll i = (a); i >= (b); i--)
#define ALL(coll) (coll).begin(), (coll).end()
#define SIZE(v) ((ll)((v).size()))
#define REPOUT(i, a, b, exp, sep) REP(i, (a), (b)) cout << (exp) << (i + 1 == (b) ? "" : (sep)); cout << "\n"
// @@ !! LIM(forall)
// ---- inserted library file forall.cc
#define EX_REP_LL(i, from, to) for (ll i = (from); i < (to); i++)
#define EX_REP_RB(x, coll) for (auto x : coll)
#define EXGEN(rep_part, cond, yes, no_behaviour) ([&]() { rep_part if (cond) return (yes); no_behaviour; }())
#define EXISTS_BASE(rep_part, cond) EXGEN(rep_part, cond, true, return false)
#define EXFIND_BASE(rep_part, cond, t) EXGEN(rep_part, cond, t, assert(0))
#define EXFIND_D_BASE(rep_part, cond, t, def) EXGEN(rep_part, cond, t, return def)
#define EXISTS(i, from, to, cond) EXISTS_BASE(EX_REP_LL(i, from, to), cond)
#define FORALL(i, from, to, cond) (not EXISTS(i, from, to, not (cond)))
#define EXFIND(i, from, to, cond) EXFIND_BASE(EX_REP_LL(i, from, to), cond, i)
#define EXFIND_D(i, from, to, cond, def) EXFIND_D_BASE(EX_REP_LL(i, from, to), cond, i, def)
#define EXISTS_C(x, coll, cond) EXISTS_BASE(EX_REP_RB(x, coll), cond)
#define FORALL_C(x, coll, cond) (not EXISTS_C(x, coll, not (cond)))
#define EXFIND_C(x, coll, cond) EXFIND_BASE(EX_REP_RB(x, coll), cond, x)
#define EXFIND_D_C(x, coll, cond, def) EXFIND_D_BASE(EX_REP_RB(x, coll), cond, x, def)
#define COUNT_BASE(rep_part, cond) ([&](){ ll ret = 0; rep_part if (cond) ret++; return ret; }())
#define COUNT(i, from, to, cond) COUNT_BASE(EX_REP_LL(i, from, to), cond)
#define COUNT_C(x, coll, cond) COUNT_BASE(EX_REP_RB(x, coll), cond)
#define IMPLIES(a, b) (not (a) or (b))
// ---- end forall.cc
// @@ !! LIM -- end mark --
int main(/* int argc, char *argv[] */) {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout << setprecision(20);
ll N; cin >> N;
// @InpGrid(N, N, D) [yEHdkyxN]
auto D = vector(N, vector(N, ll()));
for (int i = 0; i < N; i++) for (int j = 0; j < N; j++) { ll v; cin >> v; D[i][j] = v; }
// @End [yEHdkyxN]
bool b1 = FORALL(i, 0, N, FORALL(j, 0, N, (D[i][j] == 0) == (i == j)));
bool b2 = FORALL(i, 0, N, FORALL(j, 0, N, D[i][j] == D[j][i]));
bool b3 = FORALL(i, 0, N, FORALL(j, 0, N, FORALL(k, 0, N, D[i][j] <= D[i][k] + D[k][j])));
bool b4 = FORALL(i, 0, N, FORALL(j, 0, N, FORALL(k, 0, N, D[i][j] <= max(D[i][k], D[k][j]))));
cout << (b1 and b2 and b3 ? "Yes\n" : "No\n");
cout << (b1 and b2 and b4 ? "Yes\n" : "No\n");
return 0;
}
yamate11