oj.uz

Submission #205348

# Submission time Handle Problem Language Result Execution time Memory
205348 2020-02-28T15:47:44 Z mode149256 Crocodile's Underground City (IOI11_crocodile) C++11
89 / 100
 868 ms 73652 KB 
/*input

*/
#include <bits/stdc++.h>
#include "crocodile.h"
using namespace std;

typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ld, ld> pd;

typedef vector<int> vi;
typedef vector<vi> vii;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<vl> vll;
typedef vector<pi> vpi;
typedef vector<vpi> vpii;
typedef vector<pl> vpl;
typedef vector<cd> vcd;
typedef vector<pd> vpd;
typedef vector<bool> vb;
typedef vector<vb> vbb;
typedef std::string str;
typedef std::vector<str> vs;

#define x first
#define y second
#define debug(...) cout<<"["<<#__VA_ARGS__<<": "<<__VA_ARGS__<<"]\n"

const int MOD = 1000000007;
const ll INF = std::numeric_limits<ll>::max();
const int MX = 100101;
const ld PI = 3.14159265358979323846264338327950288419716939937510582097494L;

template<typename T>
pair<T, T> operator+(const pair<T, T> &a, const pair<T, T> &b) { return pair<T, T>(a.x + b.x, a.y + b.y); }
template<typename T>
pair<T, T> operator-(const pair<T, T> &a, const pair<T, T> &b) { return pair<T, T>(a.x - b.x, a.y - b.y); }
template<typename T>
T operator*(const pair<T, T> &a, const pair<T, T> &b) { return (a.x * b.x + a.y * b.y); }
template<typename T>
T operator^(const pair<T, T> &a, const pair<T, T> &b) { return (a.x * b.y - a.y * b.x); }

template<typename T>
void print(vector<T> vec, string name = "") {
	cout << name;
	for (auto u : vec)
		cout << u << ' ';
	cout << '\n';
}

const ll DID = (ll)1e17;

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
	vector<vpl> edges(N);
	{
		for (int i = 0; i < M; ++i)
		{
			int a = R[i][0];
			int b = R[i][1];
			edges[a].emplace_back(b, L[i]);
			edges[b].emplace_back(a, L[i]);
		}
	}

	vll dis(N, vl(2, DID));
	priority_queue<pl, vpl, greater<pl>> pq;

	for (int i = 0; i < K; ++i)
	{
		int c = P[i];
		dis[c][0] = dis[c][1] = 0;
		pq.push({0, c});
	}

	while (pq.size()) {
		pl dab = pq.top(); pq.pop();

		int c = (int)dab.y;
		ll d = dab.x;
		if (d > dis[c][1]) continue;

		for (auto u : edges[c]) {
			ll newDis = d + u.y;
			if (newDis <= dis[u.x][0]) {
				dis[u.x][1] = dis[u.x][0];
				dis[u.x][0] = newDis;

				if (dis[u.x][1] != DID)
					pq.push({dis[u.x][1], u.x});
			} else if (newDis < dis[u.x][1]) {
				dis[u.x][1] = newDis;
				pq.push({dis[u.x][1], u.x});
			}
		}
	}

	return dis[0][1];
}


/* Look for:
* special cases (n=1?)
* overflow (ll vs int?)
* the exact constraints (multiple sets are too slow for n=10^6 :( )
* array bounds
*/

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 7 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 10 ms 888 KB Output is correct
13 Correct 8 ms 1016 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 6 ms 504 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 7 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 10 ms 888 KB Output is correct
13 Correct 8 ms 1016 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 630 ms 65488 KB Output is correct
17 Correct 103 ms 18296 KB Output is correct
18 Correct 147 ms 19960 KB Output is correct
19 Correct 868 ms 73652 KB Output is correct
20 Correct 356 ms 52728 KB Output is correct
21 Correct 52 ms 7928 KB Output is correct
22 Incorrect 386 ms 49656 KB Output isn't correct