oj.uz

Submission #313571

# Submission time Handle Problem Language Result Execution time Memory
313571 2020-10-16T09:56:10 Z brkdnmz Lightning Rod (NOI18_lightningrod) C++17
66 / 100
 2000 ms 262148 KB 
#include <iostream>
#include <fstream>
#include <cstdio>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <stack>
#include <queue>
#include <algorithm>
#include <string.h>
#include <string>
#include <math.h>
#include <iomanip>
#include <cassert>
#include <random>
#include <time.h>
using namespace std;

#define SORT(v) sort((v).begin(), (v).end())
#define RSORT(v) sort((v).rbegin(), (v).rend())
#define REVERSE(v) reverse((v).begin(), (v).end())
#define pb push_back
#define FOR(i, n) for(int i = 0; i < (n); i++)
typedef pair<int, int> pii;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;

const int mod = 1e9 + 7;
const int mod2 = 998244353;

void fact_init(int n, int md);
ll exp(ll taban, ll us, ll md);
ll ebob(ll a, ll b);
ll ekok(ll a, ll b);
ll komb(ll a, ll b);

vector<ll> fact;
vector<ll> inv_fact;
void fact_init(int n, int md){
    fact.resize(n+5);
    inv_fact.resize(n+5);
    fact[0] = inv_fact[0] = 1;
    for(int i = 1; i <= n; i++){
        fact[i] = (fact[i-1] * i) % md;
        inv_fact[i] = exp(fact[i], md-2, md);
    }
}
ll exp(ll taban, ll us, ll md) {
    ll carpan = taban % md;
    if(carpan == 0) return 0;
    ll temp = us;
    ll res = 1;
    while(temp){
        if(temp % 2) res = (res*carpan) % md;
        temp /= 2;
        carpan = (carpan*carpan) % md;
    }
    return res;
}
 
ll ebob(ll a, ll b){
    if(!a)return b;
    return ebob(b%a, a);
}

ll ekok(ll a, ll b){
    return (a*b)/ebob(a, b);
}

ll komb(int a, int b, int md){
    if(a < b) return 0;
    return fact[a] * (inv_fact[a-b] * inv_fact[b] % md) % md;
}

ll mul(ll a, ll b, int md){
	return a*b % md;
}
const int N = 1e5 + 5;

struct P{
	int diff, sum;
	bool operator<(const P& o) const{
		return diff < o.diff;
	}
};
int main(){
    ios::sync_with_stdio(false); cin.tie(NULL);
	set<P> st;
	multiset<int> sums;
	int n; cin>>n;
	for(int i = 0; i < n; i++){
		int x, y; cin>>x>>y;
		if(!sums.empty() && *sums.rbegin() >= x+y) continue;
		while(!st.empty() && st.begin()->diff <= y-x){
			sums.erase(sums.find(st.begin()->sum));
			st.erase(st.begin());
		}
		st.insert(P{y-x, y+x});
		sums.insert(y+x);
	}
	cout<<st.size()<<"\n";
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1965 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 512 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Correct 43 ms 3976 KB Output is correct
15 Correct 45 ms 3704 KB Output is correct
16 Correct 93 ms 10872 KB Output is correct

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2098 ms 218988 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1965 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -