oj.uz

Submission #391038

# Submission time Handle Problem Language Result Execution time Memory
391038 2021-04-17T15:51:26 Z Blagojce Palembang Bridges (APIO15_bridge) C++11
22 / 100
 61 ms 10588 KB 
#include <bits/stdc++.h>
#define fr(i, n, m) for(int i = (n); i < (m); i ++)
#define pb push_back
#define st first
#define nd second
#define pq priority_queue
#define all(x) begin(x), end(x)


using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
const int i_inf = 1e9;
const ll inf = 1e18;
const ll mod = 1e9+7;
const ld eps = 1e-13;
const ld pi  = 3.14159265359;

mt19937 _rand(time(NULL));
clock_t z;

const int &mxn = 2e5+5;
int n, k;

vector<pair<ll, ll> > v;

ll lef[mxn];
ll rig[mxn];


void solve(){
	cin >> k >> n;
	
	ll sum = 0;
	fr(i, 0, n){
		char c1, c2;
		ll a, b;
		cin >> c1 >> a >> c2 >> b;
		if(c1 == c2){
			sum += abs(a-b);
			continue;
		}
		
		if(a > b) swap(a, b);
		v.pb({a, b});
		sum += b-a+1;
	}
	
	if(k == 1){
		if(v.empty()){
			cout<<sum<<endl;
			return;
		}
		
		vector<pair<ll,int> > g;
		for(auto u : v){
			g.pb({u.st, 0});
			g.pb({u.nd, 1});
		}
		
		sort(all(g));
		
		int m = g.size();
		
		ll temp_sum = 0;
		ll cnt = 0;
		
		fr(i, 0, m){
			ll pos = g[i].st;
			lef[i] = pos*cnt - temp_sum;
			if(g[i].nd == 1){
				temp_sum += pos;
				++cnt;
			}
		}
		temp_sum = 0;
		cnt = 0;
		
		for(int i = m-1; i >= 0; i --){
			ll pos = g[i].st;
			rig[i] = temp_sum - pos*cnt;
			if(g[i].nd == 0){
				temp_sum += pos;
				++cnt;
			}
		}
		ll ans = inf;
		fr(i, 0, m){
			ans = min(ans, 2*(lef[i]+rig[i]) + sum);
		}
		
		cout<<ans<<endl;
		
	}
	
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	solve();

}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 472 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 388 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 32 ms 9156 KB Output is correct
13 Correct 55 ms 10544 KB Output is correct
14 Correct 44 ms 8628 KB Output is correct
15 Correct 32 ms 6396 KB Output is correct
16 Correct 39 ms 9836 KB Output is correct
17 Correct 40 ms 10564 KB Output is correct
18 Correct 47 ms 10220 KB Output is correct
19 Correct 61 ms 10588 KB Output is correct
20 Correct 41 ms 10152 KB Output is correct
21 Correct 50 ms 10368 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -