Submission #312140

#	Time	Username	Problem	Language	Result	Execution time	Memory
312140		wildturtle	Interval Collection (CCO20_day2problem2)	C++14	25 / 25	4280 ms	284720 KiB

Main

#include<bits/stdc++.h>
using namespace std;
long long a,b,t,tree[4000035],treeL[4000035],treeR[4000035];
multiset <long long> stl,str,msl[1000005],msr[1000005];
char ch;
#define tavi begin()
#define bolo rbegin()
void update(long long node,long long L,long long R,long long idx,long long mxare) {
	if(idx<L || R<idx) return;
	if(L==R) {
		if(mxare) { if(msr[idx].empty()) treeR[node]=1e9; else treeR[node]=*msr[idx].tavi; }
		else { if(msl[idx].empty()) treeL[node]=-1e9; else treeL[node]=*msl[idx].bolo; }
		tree[node]=treeR[node]-treeL[node];
		return;
	}
	update(2*node,L,(L+R)/2,idx,mxare);
	update(2*node+1,(L+R)/2+1,R,idx,mxare);
	tree[node]=min(min(tree[2*node],tree[2*node+1]),treeR[2*node+1]-treeL[2*node]);
	treeL[node]=max(treeL[2*node],treeL[2*node+1]);
	treeR[node]=min(treeR[2*node],treeR[2*node+1]);
}
int main() {
	std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    for (long long i=1;i<=4000020;i++) {
        tree[i]=2*1e9; treeL[i]=-1e9; treeR[i]=1e9;
    }
	cin>>t;
	while(t--) {
		cin>>ch>>a>>b;
		if(ch=='A') {
			stl.insert(a);
			str.insert(b);
			msl[b].insert(a);
			msr[a].insert(b);
			update(1,1,1e6+5,b,0);
			update(1,1,1e6+5,a,1);
		}
		else {
			stl.erase(stl.find(a));
			str.erase(str.find(b));
			msl[b].erase(msl[b].find(a));
			msr[a].erase(msr[a].find(b));
			update(1,1,1e6+5,b,0);
			update(1,1,1e6+5,a,1);
		}
		if(*(stl.bolo)<=*(str.tavi)) cout<<*(msr[*(stl.bolo)].tavi)-*(msl[*(str.tavi)].bolo)<<endl;
		else cout<<tree[1]<<endl;
	}
}

• Subtask 1: 3 / 3
• Subtask 2: 8 / 8
• Subtask 3: 7 / 7
• Subtask 4: 4 / 4
• Subtask 5: 3 / 3