Submission #728993

#	Time	Username	Problem	Language	Result	Execution time	Memory
728993		Jean7	Inside information (BOI21_servers)	C++14	5 / 100	1875 ms	32284 KiB

servers

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pob pop_back
#define pub push_back
#define lb lower_bound
#define ub upper_bound
#define low (i&(-i))
#define le (node<<1)
#define ri (node<<11)
#define mid ((l+r)>>1)
#define no void(cout<<"NO\n")
#define zer void(cout<<"0\n")
#define one void(cout<<"-1\n")
#define yes void(cout<<"YES\n")
#define sz(x) (int)x.size()
#define all(x) x.begin(),x.end()
#define mm(x,y) memset(x,y,sizeof(x))

using namespace std ;

const int L = 23 ;
const int B = 750 ;
const int T = 1e3+3 ;
const int N = 1e6+6 ;
const int M = 1e9+7 ;
const int D = 998244353 ;
const long long O = 4557430888798830399 ;

int n , k ;
bool cnt[4003][4003] ;

inline void solve () {
    cin >> n >> k ;
    for ( int i = 1 ; i <= n ; i++ ) {
        cnt[i][i] = 1 ;
    }
    for ( int i = 1 ; i <= n + k - 1 ; i++ ) {
        char c ;
        int x , y ;
        cin >> c ;
        if ( c == 'S' ) {
            cin >> x >> y ;
            for ( int i = 1 ; i <= n ; i++ ) {
                if ( cnt[x][i] || cnt[y][i] ) {
                    cnt[x][i] = cnt[y][i] = 1 ;
                }
            }
        }
        else if ( c == 'Q' ) {
            cin >> x >> y ;
            cout << ( cnt[x][y] ? "yes\n" : "no\n" ) ;
        }
        else {
            cin >> x ;
            int ans = 0 ;
            for ( int i = 1 ; i <= n ; i++ ) {
                ans += cnt[i][x] ;
            }
            cout << ans << "\n" ;
        }
    }
}

signed main () {
    //freopen ( ".in" , "r" , stdin ) ;
    //freopen ( ".out" , "w" , stdout ) ;
    cin.tie(0) ;
    cout.tie(0) ;
    ios_base::sync_with_stdio(0) ;
    //cout << setprecision(14) << fixed ;
    int tc = 1 ;
    //cin >> tc ;
    while ( tc-- ) {
        solve() ;
    }
    return 0 ;
}

///  JJJJJJJ EEEEEEE  AAAAA  NN   NN 7777777
///     JJ   EE      AA   AA NNN  NN     77
///     JJ   EEEEEE  AAAAAAA NN N NN    77
///  JJ JJ   EE      AA   AA NN  NNN   77
///  JJJJJ   EEEEEEE AA   AA NN   NN  77

• Subtask 1: 2.5 / 2.5
• Subtask 2: 2.5 / 2.5
• Subtask 3: 0 / 2.5
• Subtask 4: 0 / 2.5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 12.5
• Subtask 10: 0 / 12.5
• Subtask 11: 0 / 17.5
• Subtask 12: 0 / 17.5