제출 #68601

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
68601		Kerim	Pinball (JOI14_pinball)	C++17	100 / 100	340 ms	48868 KiB

pinball

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
vector<int>v;
const ll B=1e15;
struct tree{
	ll mn[MAXN<<2];
	tree(){		
		for(int i=0;i<MAXN*4;i++)
			mn[i]=B;
	}
	void upd(int p,ll v,int nd,int x,int y){
		if(x==y){
			umin(mn[nd],v);
			return;
		}
		int mid=(x+y)>>1;
		if(p<=mid)
			upd(p,v,nd<<1,x,mid);
		else
			upd(p,v,nd<<1|1,mid+1,y);
		mn[nd]=min(mn[nd<<1],mn[nd<<1|1]);	
	}
	ll tap(int l,int r,int nd,int x,int y){
		if(l>y or x>r)
			return B;
		if(l<=x and y<=r)
			return mn[nd];
		int mid=(x+y)>>1;
		return min(tap(l,r,nd<<1,x,mid),tap(l,r,nd<<1|1,mid+1,y));	
	}
}L,R;
int a[MAXN],b[MAXN],c[MAXN],d[MAXN];
int main(){
    //~ freopen("file.in", "r", stdin);
	int n,m;
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++){
		scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
		v.pb(c[i]);
	}
	v.pb(1);v.pb(m);sort(all(v));
	v.erase(unique(all(v)),v.end());int sz=v.size();
	L.upd(1,0,1,1,sz);
	R.upd(sz,0,1,1,sz);
	ll ans=B;
	for(int i=1;i<=n;i++){
		int pos=lower_bound(all(v),c[i])-v.begin()+1;
		int x=lower_bound(all(v),a[i])-v.begin()+1;
		int y=upper_bound(all(v),b[i])-v.begin();
		ll c1=L.tap(x,y,1,1,sz);
		ll c2=R.tap(x,y,1,1,sz);
		umin(ans,c1+c2+d[i]);
		L.upd(pos,c1+d[i],1,1,sz);
		R.upd(pos,c2+d[i],1,1,sz);
	}
	if(ans==B)
		ans=-1;
	printf("%lld\n",ans);	
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

pinball.cpp: In function 'int main()':
pinball.cpp:53:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
pinball.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d",&a[i],&b[i],&c[i],&d[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 49 / 49