oj.uz

Submission #45379

# Submission time Handle Problem Language Result Execution time Memory
45379 2018-04-13T06:59:38 Z Kerim Cambridge (info1cup18_cambridge) C++17
100 / 100
 449 ms 11380 KB 
#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;}
PII arr[MAXN];
map<int,int>pm;
int ans[MAXN],c,vis[MAXN];
ll s[MAXN<<2],lazy[MAXN<<2];
const ll B=1e16;
void shift(int nd){
	ll &ret=lazy[nd];
	if(!ret)
		return;
	lazy[nd<<1]+=ret;s[nd<<1]+=ret;
	lazy[nd<<1|1]+=ret;s[nd<<1|1]+=ret;
	ret=0;	
}
void inc(int l,int r,ll v,int nd,int x,int y){
	//~ if(nd==1)
		//~ cout<<"inc "<<l<<" "<<r<<" "<<v<<endl;
	if(l>y or x>r)	
		return;
	if(l<=x and y<=r){
		s[nd]+=v;
		lazy[nd]+=v;
		return;
	}
	shift(nd);
	int mid=(x+y)>>1;
	inc(l,r,v,nd<<1,x,mid);
	inc(l,r,v,nd<<1|1,mid+1,y);
	s[nd]=min(s[nd<<1],s[nd<<1|1]);
}
void upd(int p,ll v,int nd,int x,int y){
	if(x==y){
		s[nd]=lazy[nd]+v;
		return;
	}
	shift(nd);
	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);
	s[nd]=min(s[nd<<1],s[nd<<1|1]);	
}
void add(int x,int y){
	//~ cout<<"add "<<x<<" "<<y<<endl;
	if(!vis[pm[y]])
		upd(pm[y],y,1,1,c);
	vis[pm[y]]++;
	inc(pm[y],c,-x,1,1,c);
}
void rem(int x,int y){
	//~ cout<<"rem "<<x<<" "<<y<<endl;
	vis[pm[y]]--;
	inc(pm[y],c,x,1,1,c);
	if(!vis[pm[y]])
		upd(pm[y],B,1,1,c);
}
void build(int nd,int x,int y){
	s[nd]=B;
	if(x==y)
		return;
	int mid=(x+y)>>1;
	build(nd<<1,x,mid);
	build(nd<<1|1,mid+1,y);	
}
void dfs(int nd,int x,int y){
	if(x==y){
		if(s[nd]>=INF)
			cout<<"inf ";
		else
			cout<<s[nd]<<" ";
		return;	
	}
	int mid=(x+y)>>1;
	dfs(nd<<1,x,mid);
	dfs(nd<<1|1,mid+1,y);
}
int main(){
    //~ freopen("file.in", "r", stdin);
    int n,q;
    scanf("%d%d",&n,&q);
    for(int i=1;i<=n;i++){
		int u,v;
		scanf("%d%d",&u,&v);
		arr[i]=mp(u,v);pm[v]=1;
	}
	tr(it,pm)
		it->ss=++c;
	build(1,1,c);	
	int p=1;
	for(int i=1;i<=n;i++){
		add(arr[i].ff,arr[i].ss);
		while(p<=i and s[1]<=0)
			rem(arr[p].ff,arr[p].ss),p++;	
		//~ debug(s[1]);
		ans[i]=p;	
		//~ cout<<p<<" "<<i<<endl;
		//~ wr
		//~ dfs(1,1,c);puts("");
		//~ wr
	}
	while(q--){
		int l,r;
		scanf("%d%d",&l,&r);
		if(ans[r]<=l)
			puts("1");
		else
			puts("0");
	}
	return 0;
}

Compilation message

cambridge.cpp: In function 'int main()':
cambridge.cpp:99:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&q);
     ~~~~~^~~~~~~~~~~~~~
cambridge.cpp:102:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&u,&v);
   ~~~~~^~~~~~~~~~~~~~
cambridge.cpp:122:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&l,&r);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 378 ms 10780 KB Output is correct
4 Correct 4 ms 10780 KB Output is correct
5 Correct 58 ms 10780 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 15 ms 10780 KB Output is correct
4 Correct 28 ms 10780 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 378 ms 10780 KB Output is correct
4 Correct 4 ms 10780 KB Output is correct
5 Correct 58 ms 10780 KB Output is correct
6 Correct 15 ms 10780 KB Output is correct
7 Correct 28 ms 10780 KB Output is correct
8 Correct 449 ms 11168 KB Output is correct
9 Correct 427 ms 11168 KB Output is correct
10 Correct 432 ms 11380 KB Output is correct
11 Correct 59 ms 11380 KB Output is correct
12 Correct 73 ms 11380 KB Output is correct
13 Correct 5 ms 11380 KB Output is correct