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Submission #644267

# Submission time Handle Problem Language Result Execution time Memory
644267 2022-09-24T10:11:45 Z ToroTN Crocodile's Underground City (IOI11_crocodile) C++14
100 / 100
 447 ms 45576 KB 
#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define X first
#define Y second
int n,m,k,p[100005],y,cost,d[100005][2],u,vis[100005],deg[100005];
vector<pair<int,int> > g[100005];
priority_queue<pair<int,int> > pq;
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    n=N;
    for(int i=1;i<=n;i++)
    {
        d[i][0]=1e9;
        d[i][1]=1e9;
    }
    m=M;
    for(int i=0;i<m;i++)
    {
        g[R[i][0]+1].pb({R[i][1]+1,L[i]});
        g[R[i][1]+1].pb({R[i][0]+1,L[i]});
    }
    k=K;
    for(int i=0;i<k;i++)
    {
        p[i+1]=P[i]+1;
    }
    for(int i=1;i<=k;i++)
    {
        d[p[i]][0]=0;
        d[p[i]][1]=0;
        pq.push({0,p[i]});
    }
    /*while(!pq.empty())
    {
        printf("%d %d\n",pq.top().X,pq.top().Y);
        pq.pop();
    }*/
    while(!pq.empty())
    {
        u=pq.top().Y;
        //printf("%d %d %d\n",u,d[u][0],d[u][1]);
        pq.pop();
        if(vis[u]==1)continue;
        vis[u]=1;
        for(auto [y,cost]:g[u])
        {
            // if(d[y][0]==2e9&&d[y][1]==2e9)
            // {
            //     d[y][0]=d[u][1]+cost;
            //     d[y][1]=d[u][1]+cost;
            //     pq.push({-d[y][1],y});
            //     continue;
            // }
            if(d[u][1]+cost<=d[y][0])
            {
                d[y][1]=d[y][0];
                d[y][0]=d[u][1]+cost;
                 if(++deg[y]>=2&&vis[y]==0)
                {
                    pq.push({-d[y][1],y});
                }
            }else if(d[u][1]+cost<d[y][1])
            {
                d[y][1]=d[u][1]+cost;
                 if(++deg[y]>=2&&vis[y]==0)
                {
                    pq.push({-d[y][1],y});
                }
            }
            
        }
    }
    return d[1][1];
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:49:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   49 |         for(auto [y,cost]:g[u])
      |                  ^

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 2 ms 2644 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 2644 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 2 ms 2644 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 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 4 ms 2900 KB Output is correct
10 Correct 1 ms 2704 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 4 ms 3028 KB Output is correct
13 Correct 4 ms 3028 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2772 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 2 ms 2644 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 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 4 ms 2900 KB Output is correct
10 Correct 1 ms 2704 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 4 ms 3028 KB Output is correct
13 Correct 4 ms 3028 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct
16 Correct 377 ms 41500 KB Output is correct
17 Correct 64 ms 11216 KB Output is correct
18 Correct 84 ms 12612 KB Output is correct
19 Correct 447 ms 45576 KB Output is correct
20 Correct 240 ms 36580 KB Output is correct
21 Correct 32 ms 6520 KB Output is correct
22 Correct 257 ms 31956 KB Output is correct