제출 #733827

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
733827		vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	0 / 100	2055 ms	131760 KiB

Main

#include<bits/stdc++.h>

using namespace std;
using ll = long long;
int main() {
	int t, n, m, ans, i, z,j, x, y;
	
	cin >> n;
	vector < pair < int, int > > v;
	ans = 0;
	for ( i = 1; i <= n; i ++) {
		scanf("%d",& x);
		scanf("%d",& y);
		v.push_back(make_pair(y, x));
	}
	map <int, int > A;
	sort ( v.begin(), v.end());
	for ( i = v.size() - 1; i >= 0; i -- ) {
		if ( A[i] == 0) {
			A[i] = 1;
			ans ++;
			for ( j = i; j >= 0; j --) {
				if ( abs(v[i].second - v[j].second) >= abs(v[i].first - v[j].first)) {
					A[j] = 1;
				}
			}
		}
	}
	cout << ans << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:6:6: warning: unused variable 't' [-Wunused-variable]
    6 |  int t, n, m, ans, i, z,j, x, y;
      |      ^
lightningrod.cpp:6:12: warning: unused variable 'm' [-Wunused-variable]
    6 |  int t, n, m, ans, i, z,j, x, y;
      |            ^
lightningrod.cpp:6:23: warning: unused variable 'z' [-Wunused-variable]
    6 |  int t, n, m, ans, i, z,j, x, y;
      |                       ^
lightningrod.cpp:12:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |   scanf("%d",& x);
      |   ~~~~~^~~~~~~~~~
lightningrod.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d",& y);
      |   ~~~~~^~~~~~~~~~

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