Submission #416254

#	Time	Username	Problem	Language	Result	Execution time	Memory
416254		strawberry2005	Lightning Rod (NOI18_lightningrod)	C++17	7 / 100	2059 ms	262144 KiB

Main

#include<bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define F first
#define S second
#define mp make_pair
#define nl '\n'
const int mod = 1e15+7;
#define deb(x) cout<<#x<<": "<<x<<endl

int iceil(int a, int b) {
  return (a + b - 1) / b;
}
int mod_fun(int a, int mod){
  while(a < 0) a += mod;
  return a % mod;
}

signed main(){

    #ifdef strawberryshaker2005
        freopen("input.txt", "r", stdin);
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    int n;
    cin>>n;
    stack<pair<int,int>> s;
    int ans=-mod;
    for(int i=0;i<n;i++){
        int x,y,add=0;
        cin>>x>>y;
        while(!s.empty()&&abs(x-s.top().F)<=abs(y-s.top().S)){
            s.pop();
        }
        s.push({x,y});
    }
    cout<<s.size();


    return(0);
    
}

Compilation message (stderr)

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:36:17: warning: unused variable 'add' [-Wunused-variable]
   36 |         int x,y,add=0;
      |                 ^~~
lightningrod.cpp:34:9: warning: unused variable 'ans' [-Wunused-variable]
   34 |     int ans=-mod;
      |         ^~~

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