제출 #954691

#제출 시각아이디문제언어결과실행 시간메모리
954691WarinchaiAdvertisement 2 (JOI23_ho_t2)C++14
0 / 100
1 ms456 KiB
#include<bits/stdc++.h> using namespace std; vector<pair<int,int>>v; bool check(pair<int,int>f,pair<int,int>s){ return abs(f.first-s.first)<=f.second-s.second; } int main(){ ios_base::sync_with_stdio(false); cin.tie(0); int n;cin>>n; int a,b; for(int i=1;i<=n;i++){ cin>>a>>b; v.push_back({a,b}); } stack<pair<int,int>>st; st.push(v[0]); for(int i=1;i<n;i++){ a=v[i].first; b=v[i].second; if(!check(st.top(),v[i])){ while(!st.empty()&&check(v[i],st.top())){ st.pop(); } st.push(v[i]); } } cout<<st.size(); }
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