Submission #1282502

#	Time	Username	Problem	Language	Result	Execution time	Memory
1282502		lyra_g13	Lightning Rod (NOI18_lightningrod)	C++20	44 / 100	289 ms	78244 KiB

Main

#include <bits/stdc++.h>
using ll = long long;
using namespace std;
inline int readInt() {
    int x = 0;
    char ch = getchar();
    while (ch < '0' || ch > '9') ch = getchar_unlocked();
    while (ch >= '0' && ch <= '9'){
		x = (x << 3) + (x << 1) + ch - '0';
		ch = getchar_unlocked();
	}
    return x;
}

int x[10000000], y[10000000];

int main(){
	int n = readInt();
	for(int i = 0; i < n; i++) {
		x[i] = readInt();
		y[i] = readInt();
	}
  if(n<= 2000 and n>=2){
    ll c = 0;
    for(int i = 0 ; i < n ; i++){
      ll found = false;
      ll j = 0;
       while ( j < n and found == false){
         if(i == j ){
            j = j;
         }
         else if(std::abs(x[j] - x[i]) <= y[j] - y[i]){       
           found = true;
          }
          j++;
       }
       if(found != true){
         c++;
        }
        
      }
      std::cout << c;
    }
  
  else{
  std::cout << n;
  }
	return 0;
}

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