Submission #363591

#	Time	Username	Problem	Language	Result	Execution time	Memory
363591		keta_tsimakuridze	Lightning Rod (NOI18_lightningrod)	C++14	66 / 100	2074 ms	53612 KiB

Main

#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N=1e7+5,mod=1e9+7;
int t,x[N],y[N],n;
stack<int> s; 
 main(){
	t=1;
//	cin >> t;
	while(t--){
		cin>>n;
		for(int i=1;i<=n;i++){
			cin>>x[i]>>y[i];
			while(s.size() && x[s.top()]-y[s.top()]>=x[i]-y[i]) s.pop();
			if(!s.size() || x[s.top()]+y[s.top()]<x[i]+y[i]) s.push(i);
		}
		cout<<s.size();
	}
}

Compilation message (stderr)

lightningrod.cpp:8:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 |  main(){
      |       ^

• Subtask 1: 0 / 4
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 26 / 26
• Subtask 6: 0 / 10
• Subtask 7: 0 / 20