Submission #403407

#	Time	Username	Problem	Language	Result	Execution time	Memory
403407		zaneyu	레이저 센서 (KOI16_laser)	C++14	0 / 100	1 ms	204 KiB

laser

/*input
2
0 0 
1 1
2 4
3 9
-1 1
-2 4
*/
#include<bits/stdc++.h>
using namespace std;
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define ll long long
#define pii pair<int,int> 
#define pb push_back
#define ALL(x) x.begin(),x.end()
#define f first
#define s second
#define sz(x) (int)x.size()
const int maxn=2e3+5;
pii ans[maxn];
int main(){
    ios::sync_with_stdio(false),cin.tie(0);
    int n;
    cin>>n;
    vector<pii> v;
    priority_queue<pii> less,more;
    vector<pii> vv;
    REP(i,n){
        int x,y;
        cin>>x>>y;
        v.pb({x,i});
    }
    REP1(i,2*n){
        int x,y;
        cin>>x>>y;
        vv.pb({x,i});
    }
    sort(ALL(v));
    sort(ALL(vv));
    REP1(i,sz(vv)-1) if(vv[i].f==vv[i-1].f) assert(false);
    REP1(i,sz(v)-1) if(v[i].f==v[i-1].f) assert(false);
    
    int p=0;
    for(auto &x:v){
        while(p<sz(vv) and vv[p].f<=x.f){
            less.push(vv[p]);
            ++p;
        }
        if(!sz(less)){
            continue;
        }
        else{ 
            ans[x.s].f=less.top().s;
            less.pop();
        }
        if(!sz(less)){
            continue;
        }
        else{ 
            ans[x.s].s=less.top().s;
            less.pop();
        }
    }
    vv.erase(vv.begin(),vv.begin()+p);
    while(sz(less)) vv.pb(less.top()),less.pop();
    reverse(ALL(vv));
    reverse(ALL(v));
    p=0;
    for(auto x:v){
        while(p<sz(vv) and vv[p].f>=x.f){
            more.push(vv[p]);
            ++p;
        }
        if(!ans[x.s].f){
            ans[x.s].f=more.top().s;
            more.pop();
        }
        if(!ans[x.s].s){
            ans[x.s].s=more.top().s;
            more.pop();
        }
    }
    REP(i,n) cout<<ans[i].f<<' '<<ans[i].s<<'\n';
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 19
• Subtask 3: 0 / 33
• Subtask 4: 0 / 34