oj.uz

Submission #73391

# Submission time Handle Problem Language Result Execution time Memory
73391 2018-08-28T08:12:45 Z mr_banana Simurgh (IOI17_simurgh) C++17
51 / 100
 349 ms 6152 KB 
#include <bits/stdc++.h>
#include "simurgh.h"

using namespace std;
const int MN=1e5+100;
vector<int> adj[MN];
int from[MN],to[MN];
int par[MN],h[MN];
bool mark[MN];
set<int> e;
int n,m;
int vaz[MN];
void dfs(int v){
    mark[v]=1;
    for(int e1:adj[v]){
        int u=from[e1]^to[e1]^v;
        if(!mark[u]){
            par[u]=e1;
            e.insert(e1);
            h[u]=h[v]+1;
            dfs(u);
        }
    }
}
int get(){
    vector<int> ask;
    for(int i:e){
        ask.push_back(i);
    }
    return count_common_roads(ask);
}
vector<int> find_roads(int N, vector<int> u, vector<int> v) {
    n=N,m=u.size();
    for(int i=0;i<m;i++){
        from[i]=u[i];
        to[i]=v[i];
        adj[u[i]].push_back(i);
        adj[v[i]].push_back(i);
    }
    dfs(0);
    memset(vaz,-1,sizeof vaz);
    int base=get();
    for(int i=0;i<m;i++){
        if(e.count(i)==0){
            vector<int> path;
            vector<int> pans;
            int u1=from[i],v1=to[i];
            if(h[u1]<h[v1]){
                swap(u1,v1);
            }
            for(int i=h[u1]-h[v1];i>0;i--){
                path.push_back(par[u1]);
                u1=from[par[u1]]^to[par[u1]]^u1;
            }
            while(u1!=v1){
                path.push_back(par[u1]);
                u1=from[par[u1]]^to[par[u1]]^u1;
                path.push_back(par[v1]);
                v1=from[par[v1]]^to[par[v1]]^v1;
            }
            for(int j=0;j<path.size();j++){
                if((vaz[path[j]]!=-1 && vaz[i]==-1)){
                    e.erase(path[j]);
                    e.insert(i);
                    int x=get();
                    e.insert(path[j]);
                    e.erase(i);
                    if(x<base){
                        vaz[i]=0;
                    }
                    else if(x>base){
                        vaz[i]=1;
                    }
                    else{
                        vaz[i]=vaz[path[j]];
                    }
                    pans.push_back(0);
                }
                else if(vaz[path[j]]==-1){
                    e.erase(path[j]);
                    e.insert(i);
                    int x=get();
                    e.insert(path[j]);
                    e.erase(i);
                    if(x<base){
                        vaz[i]=0;
                        vaz[path[j]]=1;
                        pans.push_back(0);
                    }
                    else if(x>base){
                        vaz[i]=1;
                        vaz[path[j]]=0;
                        pans.push_back(0);
                    }
                    else{
                        pans.push_back(1);
                    }
                }
                else{
                    pans.push_back(0);
                }
            }
            if(vaz[i]==-1){
                vaz[i]=0;
            }
            for(int j=0;j<path.size();j++){
                if(pans[j]==1){
                    vaz[path[j]]=vaz[i];
                }
            }
        }
    }
    vector<int> ans;
    for(int i=0;i<m;i++){
        if(vaz[i]!=0){
            ans.push_back(i);
        }
    }
    return ans;
}

Compilation message

simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j=0;j<path.size();j++){
                         ~^~~~~~~~~~~~
simurgh.cpp:106:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j=0;j<path.size();j++){
                         ~^~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB correct
2 Correct 6 ms 3176 KB correct
3 Correct 7 ms 3240 KB correct
4 Correct 8 ms 3240 KB correct
5 Correct 6 ms 3360 KB correct
6 Correct 7 ms 3360 KB correct
7 Correct 7 ms 3360 KB correct
8 Correct 6 ms 3360 KB correct
9 Correct 7 ms 3360 KB correct
10 Correct 7 ms 3360 KB correct
11 Correct 7 ms 3360 KB correct
12 Correct 6 ms 3360 KB correct
13 Correct 6 ms 3360 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB correct
2 Correct 6 ms 3176 KB correct
3 Correct 7 ms 3240 KB correct
4 Correct 8 ms 3240 KB correct
5 Correct 6 ms 3360 KB correct
6 Correct 7 ms 3360 KB correct
7 Correct 7 ms 3360 KB correct
8 Correct 6 ms 3360 KB correct
9 Correct 7 ms 3360 KB correct
10 Correct 7 ms 3360 KB correct
11 Correct 7 ms 3360 KB correct
12 Correct 6 ms 3360 KB correct
13 Correct 6 ms 3360 KB correct
14 Correct 12 ms 3360 KB correct
15 Correct 11 ms 3360 KB correct
16 Correct 13 ms 3360 KB correct
17 Correct 10 ms 3360 KB correct
18 Correct 8 ms 3360 KB correct
19 Correct 10 ms 3360 KB correct
20 Correct 9 ms 3360 KB correct
21 Correct 10 ms 3360 KB correct
22 Correct 8 ms 3360 KB correct
23 Correct 9 ms 3360 KB correct
24 Correct 9 ms 3360 KB correct
25 Correct 10 ms 3360 KB correct
26 Correct 9 ms 3360 KB correct
27 Correct 9 ms 3360 KB correct
28 Correct 8 ms 3360 KB correct
29 Correct 7 ms 3360 KB correct
30 Correct 8 ms 3368 KB correct
31 Correct 9 ms 3368 KB correct
32 Correct 10 ms 3368 KB correct
33 Correct 11 ms 3368 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB correct
2 Correct 6 ms 3176 KB correct
3 Correct 7 ms 3240 KB correct
4 Correct 8 ms 3240 KB correct
5 Correct 6 ms 3360 KB correct
6 Correct 7 ms 3360 KB correct
7 Correct 7 ms 3360 KB correct
8 Correct 6 ms 3360 KB correct
9 Correct 7 ms 3360 KB correct
10 Correct 7 ms 3360 KB correct
11 Correct 7 ms 3360 KB correct
12 Correct 6 ms 3360 KB correct
13 Correct 6 ms 3360 KB correct
14 Correct 12 ms 3360 KB correct
15 Correct 11 ms 3360 KB correct
16 Correct 13 ms 3360 KB correct
17 Correct 10 ms 3360 KB correct
18 Correct 8 ms 3360 KB correct
19 Correct 10 ms 3360 KB correct
20 Correct 9 ms 3360 KB correct
21 Correct 10 ms 3360 KB correct
22 Correct 8 ms 3360 KB correct
23 Correct 9 ms 3360 KB correct
24 Correct 9 ms 3360 KB correct
25 Correct 10 ms 3360 KB correct
26 Correct 9 ms 3360 KB correct
27 Correct 9 ms 3360 KB correct
28 Correct 8 ms 3360 KB correct
29 Correct 7 ms 3360 KB correct
30 Correct 8 ms 3368 KB correct
31 Correct 9 ms 3368 KB correct
32 Correct 10 ms 3368 KB correct
33 Correct 11 ms 3368 KB correct
34 Correct 349 ms 4332 KB correct
35 Correct 313 ms 4332 KB correct
36 Correct 215 ms 4332 KB correct
37 Correct 18 ms 4332 KB correct
38 Correct 332 ms 4332 KB correct
39 Correct 266 ms 4332 KB correct
40 Correct 216 ms 4332 KB correct
41 Correct 334 ms 4332 KB correct
42 Correct 337 ms 4332 KB correct
43 Correct 155 ms 4332 KB correct
44 Correct 136 ms 4332 KB correct
45 Correct 159 ms 4332 KB correct
46 Correct 116 ms 4332 KB correct
47 Correct 49 ms 4332 KB correct
48 Correct 9 ms 4332 KB correct
49 Correct 19 ms 4332 KB correct
50 Correct 51 ms 4332 KB correct
51 Correct 157 ms 4332 KB correct
52 Correct 127 ms 4332 KB correct
53 Correct 114 ms 4332 KB correct
54 Correct 161 ms 4332 KB correct
55 Correct 167 ms 4332 KB correct
56 Correct 163 ms 4332 KB correct
57 Correct 188 ms 4332 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4332 KB correct
2 Correct 5 ms 4332 KB correct
3 Incorrect 251 ms 6152 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB correct
2 Correct 6 ms 3176 KB correct
3 Correct 7 ms 3240 KB correct
4 Correct 8 ms 3240 KB correct
5 Correct 6 ms 3360 KB correct
6 Correct 7 ms 3360 KB correct
7 Correct 7 ms 3360 KB correct
8 Correct 6 ms 3360 KB correct
9 Correct 7 ms 3360 KB correct
10 Correct 7 ms 3360 KB correct
11 Correct 7 ms 3360 KB correct
12 Correct 6 ms 3360 KB correct
13 Correct 6 ms 3360 KB correct
14 Correct 12 ms 3360 KB correct
15 Correct 11 ms 3360 KB correct
16 Correct 13 ms 3360 KB correct
17 Correct 10 ms 3360 KB correct
18 Correct 8 ms 3360 KB correct
19 Correct 10 ms 3360 KB correct
20 Correct 9 ms 3360 KB correct
21 Correct 10 ms 3360 KB correct
22 Correct 8 ms 3360 KB correct
23 Correct 9 ms 3360 KB correct
24 Correct 9 ms 3360 KB correct
25 Correct 10 ms 3360 KB correct
26 Correct 9 ms 3360 KB correct
27 Correct 9 ms 3360 KB correct
28 Correct 8 ms 3360 KB correct
29 Correct 7 ms 3360 KB correct
30 Correct 8 ms 3368 KB correct
31 Correct 9 ms 3368 KB correct
32 Correct 10 ms 3368 KB correct
33 Correct 11 ms 3368 KB correct
34 Correct 349 ms 4332 KB correct
35 Correct 313 ms 4332 KB correct
36 Correct 215 ms 4332 KB correct
37 Correct 18 ms 4332 KB correct
38 Correct 332 ms 4332 KB correct
39 Correct 266 ms 4332 KB correct
40 Correct 216 ms 4332 KB correct
41 Correct 334 ms 4332 KB correct
42 Correct 337 ms 4332 KB correct
43 Correct 155 ms 4332 KB correct
44 Correct 136 ms 4332 KB correct
45 Correct 159 ms 4332 KB correct
46 Correct 116 ms 4332 KB correct
47 Correct 49 ms 4332 KB correct
48 Correct 9 ms 4332 KB correct
49 Correct 19 ms 4332 KB correct
50 Correct 51 ms 4332 KB correct
51 Correct 157 ms 4332 KB correct
52 Correct 127 ms 4332 KB correct
53 Correct 114 ms 4332 KB correct
54 Correct 161 ms 4332 KB correct
55 Correct 167 ms 4332 KB correct
56 Correct 163 ms 4332 KB correct
57 Correct 188 ms 4332 KB correct
58 Correct 6 ms 4332 KB correct
59 Correct 5 ms 4332 KB correct
60 Incorrect 251 ms 6152 KB WA in grader: NO
61 Halted 0 ms 0 KB -