제출 #253016

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
253016		infinite_iq	원 고르기 (APIO18_circle_selection)	C++14	0 / 100	1874 ms	56552 KiB

circle_selection

#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 340
#define mp make_pair
#define mid (l+r)/2
#define le node * 2 
#define ri node * 2 + 1 
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
#define all(x) x.begin(), x.end()
#define gc getchar_unlocked
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
typedef pair<double,ll>pdi;
const ll inf=1e18;
const ll mod=987654321;
const ld Pi=acos(-1);
int n ;
int X [300009] , Y [300009] , R [300009] ;
int ans [300009] ;
set < pi > s1 , s2 , s3 ;
int main () {
        cin >> n ;
        for ( int i = 0 ; i < n ; i ++ ) {
                scanf ("%d%d%d", &X [i], &Y [i] , &R [i] ) ;
                s1 .ins ( { R [i] , n - i } ) ;
                s2 .ins ( { X [i] - R [i] , i } ) ;
                s3 .ins ( { X [i] + R [i] , i } ) ;
        }
        while ( s1 .size () ) {
                pi ret = * s1 .rbegin () ;
                s1 .era ( ( -- s1.end () ) ) ;
                ret .se = n - ret .se ;
                int l = X [ret.se] - R [ret.se] , r = X [ret.se] + R [ret.se] ;
                vi todel ;
                for ( auto it = s2 .lb ( { l , - 1 } ) ; it != s2 .end () ; it ++ ) {
                        pi crnt = *it ;
                        if ( crnt .fi > r ) break ;
                        todel .pb ( crnt .se ) ;
                }
                for ( auto it = s3 .lb ( { l , - 1 } ) ; it != s3 .end () ; it ++ ) {
                        pi crnt = *it ;
                        if ( crnt .fi > r ) break ;
                        todel .pb ( crnt .se ) ;
                }
                for ( auto u : todel ) {
                        if ( s1 .find ( {   R [u] , u } ) != s1 .end () )
                                s1 .era ( { R [u] , u } ) ;
                        if ( s2 .find ( {   X [u] - R [u] , u } ) != s2 .end () )
                                s2 .era ( { X [u] - R [u] , u } ) ;
                        if ( s3 .find ( {   X [u] + R [u] , u } ) != s3 .end () )
                                s3 .era ( { X [u] + R [u] , u } ) ;
                        ans [u] = ret .se ;
                }
        }
        for ( int i = 0 ; i < n ; i ++ ) printf ("%d ", ans [i] + 1 ) ;
        cout << endl ;
}

컴파일 시 표준 에러 (stderr) 메시지

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:42:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%d%d%d", &X [i], &Y [i] , &R [i] ) ;
                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 15
• Subtask 4: 0 / 23
• Subtask 5: 0 / 30
• Subtask 6: 0 / 13