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Submission #137079

# Submission time Handle Problem Language Result Execution time Memory
137079 2019-07-27T04:31:42 Z arnold518 None (JOI16_ho_t3) C++14
100 / 100
 269 ms 21496 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;
const int MAXM = 2e5;
const int INF = 987654321;

struct Edge { int u, v; };

int N, M, Q, query[MAXM+10];
vector<int> adj[MAXN+10];
vector<pii> adj2[MAXN+10];
Edge edge[MAXM+10];

pii dist[MAXN+10];
int dp[MAXN+10], ans[MAXM+10];

int main()
{
    int i, j;
    scanf("%d%d%d", &N, &M, &Q);
    for(i=1; i<=M; i++)
    {
        int u, v;
        scanf("%d%d", &u, &v);
        adj[u].push_back(v);
        adj[v].push_back(u);
        edge[i]={u, v};
    }
    for(i=1; i<=Q; i++)
    {
        int t;
        scanf("%d", &t);
        query[t]=i;
    }

    for(i=1; i<=N; i++) dist[i]={-1, i};
    queue<int> BQ; dist[1].first=0; BQ.push(1);
    while(!BQ.empty())
    {
       int now=BQ.front();
       BQ.pop();

       for(int nxt : adj[now])
       {
           if(dist[nxt].first!=-1) continue;
           dist[nxt].first=dist[now].first+1;
           BQ.push(nxt);
       }
    }

    for(i=1; i<=M; i++)
    {
        Edge &now=edge[i];
        int t=INF;
        if(query[i]!=0) t=query[i];
        if(dist[now.u].first+1==dist[now.v].first) adj2[now.v].push_back({now.u, t});
        else if(dist[now.v].first+1==dist[now.u].first) adj2[now.u].push_back({now.v, t});
    }
    sort(dist+1, dist+N+1);

    dp[1]=INF;
    for(i=2; i<=N; i++)
    {
        int now=dist[i].second;
        for(pii nxt : adj2[now]) dp[now]=max(dp[now], min(dp[nxt.first], nxt.second));
        if(dp[now]!=INF) ans[dp[now]]++;
        //printf("%d %d\n", now, dp[now]);
    }
    for(i=1; i<=Q; i++) ans[i]+=ans[i-1];
    for(i=1; i<=Q; i++) printf("%d\n", ans[i]);
}

Compilation message

2016_ho_t3.cpp: In function 'int main()':
2016_ho_t3.cpp:24:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
2016_ho_t3.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &N, &M, &Q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
2016_ho_t3.cpp:29:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &u, &v);
         ~~~~~^~~~~~~~~~~~~~~~
2016_ho_t3.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &t);
         ~~~~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 5240 KB Output is correct
3 Correct 7 ms 5240 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5116 KB Output is correct
6 Correct 8 ms 4984 KB Output is correct
7 Correct 7 ms 4984 KB Output is correct
8 Correct 8 ms 5140 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 5240 KB Output is correct
3 Correct 7 ms 5240 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5116 KB Output is correct
6 Correct 8 ms 4984 KB Output is correct
7 Correct 7 ms 4984 KB Output is correct
8 Correct 8 ms 5140 KB Output is correct
9 Correct 250 ms 17244 KB Output is correct
10 Correct 221 ms 17272 KB Output is correct
11 Correct 152 ms 17528 KB Output is correct
12 Correct 223 ms 17528 KB Output is correct
13 Correct 173 ms 17396 KB Output is correct
14 Correct 269 ms 17144 KB Output is correct
15 Correct 141 ms 14968 KB Output is correct
16 Correct 97 ms 14584 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 15964 KB Output is correct
2 Correct 169 ms 17596 KB Output is correct
3 Correct 116 ms 16752 KB Output is correct
4 Correct 150 ms 17736 KB Output is correct
5 Correct 147 ms 17272 KB Output is correct
6 Correct 155 ms 17240 KB Output is correct
7 Correct 131 ms 14712 KB Output is correct
8 Correct 100 ms 14684 KB Output is correct
9 Correct 79 ms 13424 KB Output is correct
10 Correct 60 ms 13168 KB Output is correct
11 Correct 184 ms 18936 KB Output is correct
12 Correct 172 ms 18296 KB Output is correct
13 Correct 194 ms 18160 KB Output is correct
14 Correct 198 ms 18996 KB Output is correct
15 Correct 203 ms 18168 KB Output is correct
16 Correct 173 ms 17876 KB Output is correct
17 Correct 199 ms 18648 KB Output is correct
18 Correct 155 ms 16376 KB Output is correct
19 Correct 230 ms 21496 KB Output is correct
20 Correct 194 ms 18524 KB Output is correct
21 Correct 134 ms 15536 KB Output is correct
22 Correct 129 ms 15412 KB Output is correct

Subtask #4
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 5240 KB Output is correct
3 Correct 7 ms 5240 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5116 KB Output is correct
6 Correct 8 ms 4984 KB Output is correct
7 Correct 7 ms 4984 KB Output is correct
8 Correct 8 ms 5140 KB Output is correct
9 Correct 250 ms 17244 KB Output is correct
10 Correct 221 ms 17272 KB Output is correct
11 Correct 152 ms 17528 KB Output is correct
12 Correct 223 ms 17528 KB Output is correct
13 Correct 173 ms 17396 KB Output is correct
14 Correct 269 ms 17144 KB Output is correct
15 Correct 141 ms 14968 KB Output is correct
16 Correct 97 ms 14584 KB Output is correct
17 Correct 250 ms 15964 KB Output is correct
18 Correct 169 ms 17596 KB Output is correct
19 Correct 116 ms 16752 KB Output is correct
20 Correct 150 ms 17736 KB Output is correct
21 Correct 147 ms 17272 KB Output is correct
22 Correct 155 ms 17240 KB Output is correct
23 Correct 131 ms 14712 KB Output is correct
24 Correct 100 ms 14684 KB Output is correct
25 Correct 79 ms 13424 KB Output is correct
26 Correct 60 ms 13168 KB Output is correct
27 Correct 184 ms 18936 KB Output is correct
28 Correct 172 ms 18296 KB Output is correct
29 Correct 194 ms 18160 KB Output is correct
30 Correct 198 ms 18996 KB Output is correct
31 Correct 203 ms 18168 KB Output is correct
32 Correct 173 ms 17876 KB Output is correct
33 Correct 199 ms 18648 KB Output is correct
34 Correct 155 ms 16376 KB Output is correct
35 Correct 230 ms 21496 KB Output is correct
36 Correct 194 ms 18524 KB Output is correct
37 Correct 134 ms 15536 KB Output is correct
38 Correct 129 ms 15412 KB Output is correct
39 Correct 235 ms 21240 KB Output is correct
40 Correct 245 ms 21316 KB Output is correct
41 Correct 198 ms 18412 KB Output is correct
42 Correct 239 ms 21444 KB Output is correct
43 Correct 222 ms 21240 KB Output is correct
44 Correct 222 ms 20940 KB Output is correct
45 Correct 216 ms 20968 KB Output is correct
46 Correct 133 ms 16760 KB Output is correct
47 Correct 128 ms 16504 KB Output is correct
48 Correct 131 ms 16404 KB Output is correct
49 Correct 106 ms 14804 KB Output is correct
50 Correct 95 ms 14824 KB Output is correct
51 Correct 105 ms 15600 KB Output is correct
52 Correct 99 ms 15604 KB Output is correct
53 Correct 115 ms 14832 KB Output is correct
54 Correct 112 ms 14704 KB Output is correct