답안 #961437

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
961437	2024-04-12T05:57:52 Z	vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	1458 ms	257692 KB

lightningrod

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"

const int maxn = 1e7 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e9 + 100;
const int MOD = 1e9 + 7;
const int maxl = 30;
const int P = 31;

int n;
int a[maxn];
int b[maxn];
bool ok[maxn];

void test(){
	cin >> n;
	int mx = -inf;
	for(int i = 1; i <= n; i++){
		cin >> a[i] >> b[i];
		if(a[i] + b[i] > mx){
			ok[i] = 1;		}
		mx = max(mx, a[i] + b[i]);
	}
	int mn = inf * 2, cnt = 0;
	for(int i = n; i > 0; i--){
		if(a[i] - b[i] < mn && ok[i]) cnt++;
		mn = min(mn, a[i] - b[i]);
	}
	cout << cnt;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int t = 1; t = 1;
	while(t--) test();
	cout << ent;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1133 ms	144200 KB	Output is correct
2	Correct	1133 ms	151896 KB	Output is correct
3	Correct	1076 ms	167564 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4556 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4556 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4564 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4556 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4564 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4556 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4564 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	28 ms	12380 KB	Output is correct
15	Correct	37 ms	14164 KB	Output is correct
16	Correct	26 ms	11352 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1137 ms	148968 KB	Output is correct
2	Correct	1156 ms	184260 KB	Output is correct
3	Correct	1153 ms	181376 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1133 ms	144200 KB	Output is correct
2	Correct	1133 ms	151896 KB	Output is correct
3	Correct	1076 ms	167564 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4556 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4564 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	28 ms	12380 KB	Output is correct
18	Correct	37 ms	14164 KB	Output is correct
19	Correct	26 ms	11352 KB	Output is correct
20	Correct	1137 ms	148968 KB	Output is correct
21	Correct	1156 ms	184260 KB	Output is correct
22	Correct	1153 ms	181376 KB	Output is correct
23	Correct	1458 ms	257692 KB	Output is correct
24	Correct	1275 ms	239572 KB	Output is correct
25	Correct	1304 ms	220320 KB	Output is correct