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Submission #673798

# Submission time Handle Problem Language Result Execution time Memory
673798 2022-12-22T04:56:32 Z sudheerays123 Lightning Rod (NOI18_lightningrod) C++17
66 / 100
 1339 ms 262144 KB 
#include<bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define ll long long int
const ll N = 100+5 , INF = 1e18 , MOD = 1e9+7;

bool inside(ll x1 , ll y1 , ll x2 , ll y2){
	return (abs(x2-x1) <= (y2-y1));
}

void solve(){

	ll n;
	cin >> n;

	vector<pair<ll,ll>> a(n+5);
	for(ll i = 1; i <= n; i++) cin >> a[i].first >> a[i].second;

	vector<ll> leftadd(n+5) , leftinclude(n+5,INF);

	for(ll i = 1; i <= n; i++){
		ll last = INF;
		for(ll j = i-1; j >= 1; j--){
			if(!(inside(a[j].first,a[j].second,a[i].first,a[i].second))){
				last = j+1;
				break;
			}
		}
		if(last == INF) last = 1;
		leftadd[i] = last;
	}

	for(ll i = 1; i <= n; i++){
		for(ll j = i+1; j <= n; j++){
			if((inside(a[j].first,a[j].second,a[i].first,a[i].second))){
				leftinclude[j] = min(leftinclude[j],i);
			}
			else break;
		}
	}

	vector<ll> dp(n+5);
	dp[1] = 1;

	for(ll i = 1; i <= n; i++){
		dp[i] = dp[leftadd[i]-1]+1;
		if(leftinclude[i] != INF) dp[i] = min(dp[i],dp[leftinclude[i]]);
	}

	cout << dp[n];
}

int main(){

	fast;

	ll tc = 1;
	// cin >> tc;
	while(tc--) solve();

	return 0;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1310 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 42 ms 7424 KB Output is correct
15 Correct 45 ms 11272 KB Output is correct
16 Correct 38 ms 10188 KB Output is correct

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1339 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1310 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -