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Submission #788534

# Submission time Handle Problem Language Result Execution time Memory
788534 2023-07-20T10:28:28 Z acatmeowmeow Crocodile's Underground City (IOI11_crocodile) C++11
100 / 100
 377 ms 89156 KB 
#include "crocodile.h"
#include <bits/stdc++.h>

using namespace std;

const int NMAX = 1e5;
long long dist[NMAX + 5][2];
vector<pair<int, long long>> adj[NMAX + 5];
//bool vis[NMAX + 5];
priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> pq;

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){

    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    for (int i = 0; i < M; i++) {
        adj[R[i][0]].push_back({R[i][1], (long long)L[i]});
        adj[R[i][1]].push_back({R[i][0], (long long)L[i]});
    }

    for (int i = 0; i < N; i++) dist[i][0] = dist[i][1] = 1e18;

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

    while (pq.size()) {
        int p = pq.top().first, u = pq.top().second; pq.pop();
        if (p > dist[u][1]) continue;
		if (!u) return (int)p;
        for (auto&x : adj[u]) {
            int v = x.first;
		   	long long c = x.second;
			if (p + c < dist[v][0]) {
				if (dist[v][0] < dist[v][1]) pq.push({dist[v][0], v});
				dist[v][1] = dist[v][0];
				dist[v][0] = p + c;
			} else if (p + c < dist[v][1]) {
				dist[v][1] = p + c;
				pq.push({dist[v][1], v});
			}
        }
    }
    //for (int i = 0; i < N; i++) cout << dist[i][0] << " ";
    //return (int)dist[0][1];
}

/*#define MAX_N 50000
#define MAX_M 10000000

static int N, M;
static int R[MAX_M][2];
static int L[MAX_M];
static int K;
static int P[MAX_N];
static int solution;

inline
void my_assert(int e) {if (!e) abort();}

void read_input()
{
  int i;
  //my_assert(3==scanf("%d %d %d",&N,&M,&K));
  cin >> N>> M >> K;
  for(i=0; i<M; i++)
    //my_assert(3==scanf("%d %d %d",&R[i][0],&R[i][1],&L[i]));
    cin >> R[i][0] >> R[i][1] >> L[i];
  for(i=0; i<K; i++)
    //my_assert(1==scanf("%d",&P[i]));
    cin >> P[i];
  //my_assert(1==scanf("%d",&solution));
}

int main()
{
  int ans;
  read_input();
  ans = travel_plan(N,M,R,L,K,P);
cout << ans << '\n';

  return 0;
}*/

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:45:1: warning: control reaches end of non-void function [-Wreturn-type]
   45 | }
      | ^

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2672 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2672 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3028 KB Output is correct
10 Correct 2 ms 2684 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 4 ms 3412 KB Output is correct
13 Correct 3 ms 3412 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2832 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2672 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3028 KB Output is correct
10 Correct 2 ms 2684 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 4 ms 3412 KB Output is correct
13 Correct 3 ms 3412 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2832 KB Output is correct
16 Correct 302 ms 82896 KB Output is correct
17 Correct 54 ms 17612 KB Output is correct
18 Correct 63 ms 20060 KB Output is correct
19 Correct 377 ms 89156 KB Output is correct
20 Correct 220 ms 68068 KB Output is correct
21 Correct 28 ms 9664 KB Output is correct
22 Correct 287 ms 64212 KB Output is correct