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Submission #961432

# Submission time Handle Problem Language Result Execution time Memory
961432 2024-04-12T05:43:31 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
11 / 100
 1119 ms 172336 KB 
#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

# Verdict Execution time Memory Grader output
1 Correct 1119 ms 172336 KB Output is correct
2 Correct 1097 ms 171464 KB Output is correct
3 Correct 1105 ms 140320 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory 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 4444 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory 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 4444 KB Output is correct
8 Incorrect 1 ms 4452 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory 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 4444 KB Output is correct
8 Incorrect 1 ms 4452 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory 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 4444 KB Output is correct
8 Incorrect 1 ms 4452 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1117 ms 136728 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1119 ms 172336 KB Output is correct
2 Correct 1097 ms 171464 KB Output is correct
3 Correct 1105 ms 140320 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 4444 KB Output is correct
11 Incorrect 1 ms 4452 KB Output isn't correct
12 Halted 0 ms 0 KB -