제출 #1303161

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1303161		nhinconmemay	Team Contest (JOI22_team)	C++20	26 / 100	2095 ms	9896 KiB

team

#include <bits/stdc++.h>

using namespace std ;

#define ll long long
#define FOR(i ,a  , b) for(int  i = a ; i <= b  ; i++)
#define name "teamcontest"
#define pb push_back
#define all(a) a.begin() , a.end()
#define bit(mask , i) ((mask >> i) & 1)
#define fi first
#define se second

const  ll N = 1e6 + 5 ;
const  ll LOG = 20 ;
const  ll MOD = 1e9 + 7 ;
ll n ;
struct Point
{
    ll a , b , c ;
}x[N];
bool cmd(Point x , Point y)
{
    if(x.a != y.a) return x.a < y.a ;
    if(x.b != y.b) return x.b < y.b ;
    return x.c < y.c ;
}

struct fenwick
{
    ll f[500005] , n ;
    void init(int _n)
    {
        n = _n ;
        memset(f , -1 , sizeof f) ;
    }
    void update(ll i , ll x)
    {
        while(i < n)
        {
            f[i] = max(f[i] , x);
            i += i & (-i) ;
        }
    }
    ll getmax(ll i)
    {
        ll res = -1 ;
        while(i)
        {
            res = max(res , f[i]) ;
            i -= i &(-i) ;
        }
        return res ;
    }
}fen;
vector<ll> rrhB ;
#define lo lower_bound
namespace sub2
{
    ll getval(ll x)
    {
        return lower_bound(rrhB.begin(), rrhB.end(), x) - rrhB.begin() + 1;
    }

    void sol()
    {
        rrhB.clear();
        FOR(i,1,n)
        {
            rrhB.push_back(x[i].b);
            rrhB.push_back(x[i].b - 1);
        }
        sort(rrhB.begin(), rrhB.end());
        rrhB.erase(unique(rrhB.begin(), rrhB.end()), rrhB.end());

        ll ans = -1;

        FOR(i,3,n)
        {
            ll cost = -1;
            fen.init((int)rrhB.size() + 2);

            FOR(j,1,i-1)
            {
                if(x[i].a == x[j].a) continue;

                if(x[j].b > x[i].b)
                {
                    ll C = fen.getmax(getval(x[j].b - 1));
                    if(C > x[j].c && C > x[i].c)
                        cost = max(cost, x[i].a + x[j].b + C);
                }

                fen.update(getval(x[j].b), x[j].c);
            }

            ans = max(ans, cost);
        }

        cout << ans;
    }

    bool checksub()
    {
        return n <= 4000;
    }
}

namespace sub4
{
    bool f[21][21][21] ;
    Point X[N] ;
    void sol()
    {
        FOR(i , 1, n) f[x[i].a][x[i].b][x[i].c] = 1 ;
        ll cnt = 0;
        FOR(i ,1, 20)
            FOR(j ,1,20)
                FOR(z , 1 , 20)
                        if(f[i][j][z]) X[++cnt] = {i , j , z} ;
        ll ans = -1 ;
    sort(X + 1 , X + cnt + 1 , cmd) ;
//    cout << cnt <<'\n';
//   FOR(i , 1,cnt) cout << X[i].a <<' '<< X[i].b <<' '<< X[i].c <<'\n';
    FOR(i  ,3 ,cnt)
    {
        ll cost = -1 ;
        fen.init(100) ;
       FOR(j , 1, i - 1)
       {
           if(X[i].a == X[j].a) continue ;
           if(j == 1)
           {
              // cout << "update" << x[j].b <<"->"<< x[j].c <<'\n';
                fen.update(X[j].b , X[j].c) ;
                continue ;
           }
           if(X[j].b > X[i].b)
           {

               ll C = fen.getmax(X[j].b - 1) ;
              //  cout << x[j].b - 1 <<'\n';
               if(C > X[j].c && C > X[i].c) cost = max(cost , X[i].a + X[j].b + fen.getmax(X[j].b - 1)) ;
           }


           fen.update(X[j].b , X[j].c) ;
       }
       ans = max(ans , cost) ;
    }
    cout << ans ;

    }
    bool checksub()
    {
        FOR(i , 1,n)
        {
            if(x[i].a > 20 || x[i].b > 20 || x[i].c > 20) return false  ;
        }
        return true ;
    }
}
int main()
{
    ios_base::sync_with_stdio(false) ;
    cin.tie(0) ;
    cout.tie(0) ;
    if(fopen(name".inp" ,"r"))
    {
        freopen(name".inp" , "r" , stdin) ;
        freopen(name".out" , "w" , stdout) ;
    }
    cin >> n ;
    FOR(i ,1 , n) cin >> x[i].a >> x[i].b >> x[i].c ;
    sort(x + 1 , x + n + 1 , cmd) ;
    if(sub4::checksub())
    sub4::sol() ;
    else sub2::sol() ;
}

컴파일 시 표준 에러 (stderr) 메시지

team.cpp: In function 'int main()':
team.cpp:170:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  170 |         freopen(name".inp" , "r" , stdin) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
team.cpp:171:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  171 |         freopen(name".out" , "w" , stdout) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 29
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 27