結果

問題 No.497 入れ子の箱
ユーザー hamrayhamray
提出日時 2020-11-23 17:16:18
言語 C++11
(gcc 13.3.0)
結果
WA  
実行時間 -
コード長 5,895 bytes
コンパイル時間 1,843 ms
コンパイル使用メモリ 177,536 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-23 17:36:38
合計ジャッジ時間 3,431 ms
ジャッジサーバーID
(参考情報)
judge3 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 20 WA * 9
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
//#include <atcoder/all>
//using namespace atcoder;
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
const double pi = 3.141592653589793238462643383279;
using namespace std;
//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<long long, long long> PLL;
typedef pair<int, PII> TIII;
typedef long long LL;
typedef unsigned long long ULL;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
//container util
//------------------------------------------
#define ALL(a) (a).begin(), (a).endf()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define SQ(a) ((a) * (a))
#define EACH(i, c) for (typeof((c).begin()) i = (c).begin(); i != (c).endf(); ++i)
#define EXIST(s, e) ((s).find(e) != (s).endf())
#define SORT(c) sort((c).begin(), (c).endf())
//repetition
//------------------------------------------
#define FOR(i, s, n) for (int i = s; i < (int)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define MOD 1000000007
#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto &a : x)
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
const double EPS = 1e-9, PI = acos(-1);
//
typedef string::const_iterator State;
template< int mod >
struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p) {
if((x += p.x) >= mod) x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p) {
if((x += mod - p.x) >= mod) x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p) {
x = (int) (1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const {
int a = x, b = mod, u = 1, v = 0, t;
while(b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const {
ModInt ret(1), mul(x);
while(n > 0) {
if(n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend ostream &operator<<(ostream &os, const ModInt &p) {
return os << p.x;
}
friend istream &operator>>(istream &is, ModInt &a) {
int64_t t;
is >> t;
a = ModInt< mod >(t);
return (is);
}
static int get_mod() { return mod; }
};
using modint = ModInt< 1000000007 >;
template< typename T >
struct Combination {
vector< T > _fact, _rfact, _inv;
Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) {
_fact[0] = _rfact[sz] = _inv[0] = 1;
for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i;
_rfact[sz] /= _fact[sz];
for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1);
for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1];
}
inline T fact(int k) const { return _fact[k]; }
inline T rfact(int k) const { return _rfact[k]; }
inline T inv(int k) const { return _inv[k]; }
T P(int n, int r) const {
if(r < 0 || n < r) return 0;
return fact(n) * rfact(n - r);
}
T C(int p, int q) const {
if(q < 0 || p < q) return 0;
return fact(p) * rfact(q) * rfact(p - q);
}
T H(int n, int r) const {
if(n < 0 || r < 0) return (0);
return r == 0 ? 1 : C(n + r - 1, r);
}
};
vector<pair<int, int>> dp(3010); /* iyj(, z) */
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(12);
int N; cin >> N;
vector<pair<int, pair<int, int>>> vp;
vector<int> vv;
REP(i,N){
int x, y, z; cin >> x >> y >> z;
vv.push_back(x);
vv.push_back(y);
vv.push_back(z);
vector<int> v{x, y, z};
sort(all(v));
vp.push_back(make_pair(v[0], make_pair(v[1], v[2])));
}
sort(all(vv));
vv.erase(unique(all(vv)), vv.end());
REP(i,N){
int a = lower_bound(all(vv), vp[i].first) - vv.begin();
int b = lower_bound(all(vv), vp[i].second.first) - vv.begin();
int c = lower_bound(all(vv), vp[i].second.second) - vv.begin();
vp[i] = make_pair(a, make_pair(b, c));
}
vector<vector<pair<int, int>>> v(vv.size());
REP(i,N){
v[vp[i].first].push_back(vp[i].second);
}
REP(i,N){
int y = vp[i].second.first;
int z = vp[i].second.second;
dp[y] = make_pair(1, min(dp[y].second, z));
}
bool f = false;
REP(i,vv.size()){
if(v[i].empty()) continue;
if(!f){ f = true;}
else{
vector<pair<int, int>> pd = dp;
for(int j=0; j<v[i].size(); j++){
int y = v[i][j].first;
int z = v[i][j].second;
for(int k=0; k<y; k++){
if(dp[k].second < z){
if(pd[y].first < dp[k].first + 1){
pd[y] = make_pair(dp[k].first + 1, z);
}
}
}
}
REP(i,3010) dp[i] = pd[i];
}
}
int ans = 0;
REP(i,3010) {
ans = max(ans, dp[i].first);
}
cout << ans << endl;
return 0;
}
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