Submission #547091

#	Time	Username	Problem	Language	Result	Execution time	Memory
547091		errorgorn	Usmjeravanje (COCI22_usmjeravanje)	C++17	0 / 110	1 ms	340 KiB

Main

// Super Idol的笑容
//    都没你的甜
//  八月正午的阳光
//    都没你耀眼
//  热爱105°C的你
// 滴滴清纯的蒸馏水

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define int long long
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << ": " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define ub upper_bound

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n,m,k;
ii arr[200005];
ii brr[200005];
bool dir[200005];

set<ii,greater<ii> > l,r;

void rem(int i){
	l.erase({brr[i].fi,i});
	r.erase({brr[i].se,i});
}

signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n>>m>>k;
	rep(x,1,k+1) cin>>arr[x].fi>>arr[x].se;
	
	vector<int> idx;
	rep(x,1,k+1) idx.pub(x);
	
	sort(all(idx),[](int i,int j){
		if (arr[i].fi!=arr[j].fi) return arr[i].fi<arr[j].fi;
		else return arr[i].se>arr[j].se;
	});
	
	rep(x,0,k) brr[idx[x]].fi=x;
	
	sort(all(idx),[](int i,int j){
		if (arr[i].se!=arr[j].se) return arr[i].se<arr[j].se;
		else return arr[i].fi>arr[j].fi;
	});
	
	rep(x,0,k) brr[idx[x]].se=x;
	
	rep(x,1,k+1) l.insert({brr[x].fi,x});
	rep(x,1,k+1) r.insert({brr[x].se,x});
	
	int ans=n+m;
	
	while (!l.empty()){
		if ((*l.begin()).se==(*r.begin()).se){
			rem((*l.begin()).se);
		}
		else{
			int a=(*l.begin()).se,b=(*r.begin()).se;
			int lv2=arr[a].fi,rv2=arr[b].se;
			int lv1=arr[b].fi,rv1=arr[a].se;
			
			rem(a);
			rem(b);
			dir[b]=1;
			
			while (!l.empty()){
				a=(*l.begin()).se,b=(*r.begin()).se;
				if (lv1<arr[a].fi){
					rv1=min(rv1,arr[a].se);
					rem(a);
				}
				else if (rv1<arr[b].se){
					lv1=min(lv1,arr[b].fi);
					rem(b);
					dir[b]=1;
				}
				else break;
			}
			
			// cout<<lv1<<" "<<lv2<<endl;
			// cout<<rv1<<" "<<rv2<<endl;
			ans-=(lv2-lv1+1)+(rv2-rv1+1);
			ans++;
		}
	}
	
	cout<<ans<<endl;
	rep(x,1,k+1) cout<<dir[x]<<" "; cout<<endl;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:31:26: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   31 | #define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
      |                          ^~~
Main.cpp:118:2: note: in expansion of macro 'rep'
  118 |  rep(x,1,k+1) cout<<dir[x]<<" "; cout<<endl;
      |  ^~~
Main.cpp:118:34: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  118 |  rep(x,1,k+1) cout<<dir[x]<<" "; cout<<endl;
      |                                  ^~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 60