제출 #338115

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
338115		Kerim	원숭이와 사과 나무 (IZhO12_apple)	C++17	0 / 100	611 ms	262148 KiB

apple

#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;}
struct node {
	int mn,ans,lazy;
    node *l, *r;
    node(){l=r=NULL;}
};
const int B=1e9;
void merge(node *v,node *cep,node *sag){
	v->mn=min(cep->mn,sag->mn);v->ans=0;
	if(cep->mn==v->mn)
		v->ans+=cep->ans;
	if(sag->mn==v->mn)
		v->ans+=sag->ans;
}
void add(node *v,int val){
	v->lazy+=val;v->mn+=val;
}
void shift(node *v){
	if(v==NULL or v->lazy==0)
		return;
	add(v->l,v->lazy);
	add(v->r,v->lazy);
	v->lazy=0;
}
void inc(node *v,int l,int r,int x=1,int y=B){
	if(v==NULL or l>y or x>r or l>r)
		return;
	if(l<=x and y<=r){
		//cout<<"$ "<<x<<" "<<y<<endl;
		add(v,1);
		return;
	}
	int mid=(x+y)>>1;
	if(v->l==NULL){
		v->l=new node();
		v->l->ans=(mid-x+1);v->l->mn=v->l->lazy=0;
	}
	if(v->r==NULL){
		v->r=new node();
		v->r->ans=(y-mid);v->r->mn=v->r->lazy=0;
	}
	shift(v);
	inc(v->l,l,r,x,mid);
	inc(v->r,l,r,mid+1,y);
	merge(v,v->l,v->r);
}
node *ans;
void get(node *v,int l,int r,int x=1,int y=B){
	if(l>y or x>r or l>r or x>y)
		return;
	if(l<=x and y<=r){
		//cout<<x<<" "<<y<<" $ "<<v->mn<<" "<<v->ans<<endl;
		if(ans==NULL)
			ans=v;
		else{
			node *tmp=new node();
			merge(tmp,ans,v);ans=tmp;	
		}
		return;
	}
	int mid=(x+y)>>1;
	if(v->l==NULL){
		v->l=new node();
		v->l->ans=(mid-x+1);v->l->mn=v->l->lazy=0;
	}
	if(v->r==NULL){
		v->r=new node();
		v->r->ans=(y-mid);v->r->mn=v->r->lazy=0;
	}
	shift(v);
	get(v->l,l,r,x,mid);
	get(v->r,l,r,mid+1,y);
	merge(v,v->l,v->r);
}
int main(){
    //freopen("file.in", "r", stdin);
    node *root = new node();
	root->ans=B;root->lazy=root->mn=0;
    int q,c=0;
    scanf("%d",&q);
    while(q--){
    	int t;int l,r;
		scanf("%d%d%d",&t,&l,&r);l+=c;r+=c;
		if(t==2){
			//cout<<"inc "<<l<<" "<<r<<endl;
			inc(root,l,r);
		}
		else{
			//cout<<"get "<<l<<" "<<r<<endl;
			ans=NULL;get(root,l,r);c=ans->ans;
			if(ans->mn>0)c=0;c=(r-l+1)-c;
			printf("%d\n",c);
		}
    }
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

apple.cpp: In function 'int main()':
apple.cpp:109:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  109 |    if(ans->mn>0)c=0;c=(r-l+1)-c;
      |    ^~
apple.cpp:109:21: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  109 |    if(ans->mn>0)c=0;c=(r-l+1)-c;
      |                     ^
apple.cpp:98:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   98 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
apple.cpp:101:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  101 |   scanf("%d%d%d",&t,&l,&r);l+=c;r+=c;
      |   ~~~~~^~~~~~~~~~~~~~~~~~~

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