oj.uz

Submission #950597

# Submission time Handle Problem Language Result Execution time Memory
950597 2024-03-20T13:22:11 Z Nexus Two Currencies (JOI23_currencies) C++17
10 / 100
 159 ms 192964 KB 
#include <bits/stdc++.h>
#define ll long long

using namespace std;

const ll N=2e3+9,M=2e18+9,mod=1e9+7;

ll a[N],b[N],n,m,q,s,t,x,y,z;
vector<ll>v[N],ed[N][N],p;

void dfs(ll node,ll ca)
{
    if(node==t)
    {
        z=1;
        return;
    }
    for(auto i:v[node])
    if(i!=ca)
    {
        ll g=p.size();
        for(auto j:ed[node][i])p.push_back(j);
        dfs(i,node);
        if(z)return;
        ll k=g+ed[node][i].size();
        for(ll j=g;j<k;++j)p[j]=0;
    }
}

ll ans()
{
    p.clear();
    z=0;
    dfs(s,s);
    
    sort(p.begin(),p.end());
    n=p.size();
    for(ll i=0;i<n;++i)
    {
        if(p[i]<=y)y-=p[i];
        else
        {
            x-=p.size()-i;
            break;
        }
    }
    
    if(x>=0)return x;
    return -1;
    
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    
    cin>>n>>m>>q;
    for(ll i=1;i<n;++i)
    {
        cin>>a[i]>>b[i];
        v[a[i]].push_back(b[i]);
        v[b[i]].push_back(a[i]);
    }
    
    for(ll i=0;i<m;++i)
    {
        cin>>x>>y;
        ed[a[x]][b[x]].push_back(y);
        ed[b[x]][a[x]].push_back(y);
    }
    
    while(q--)
    {
        cin>>s>>t>>x>>y;
        cout<<ans()<<'\n';
    }
    
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 95296 KB Output is correct
2 Correct 25 ms 95064 KB Output is correct
3 Correct 35 ms 95020 KB Output is correct
4 Correct 25 ms 95068 KB Output is correct
5 Correct 78 ms 95548 KB Output is correct
6 Correct 66 ms 95576 KB Output is correct
7 Correct 50 ms 95512 KB Output is correct
8 Correct 80 ms 95576 KB Output is correct
9 Correct 80 ms 95696 KB Output is correct
10 Correct 73 ms 95500 KB Output is correct
11 Correct 75 ms 95568 KB Output is correct
12 Correct 98 ms 95584 KB Output is correct
13 Correct 159 ms 95816 KB Output is correct
14 Correct 146 ms 95820 KB Output is correct
15 Correct 113 ms 95576 KB Output is correct
16 Correct 109 ms 95580 KB Output is correct
17 Correct 113 ms 95580 KB Output is correct
18 Correct 114 ms 95576 KB Output is correct
19 Correct 58 ms 95420 KB Output is correct
20 Correct 57 ms 95572 KB Output is correct
21 Correct 58 ms 95576 KB Output is correct
22 Correct 59 ms 95580 KB Output is correct
23 Correct 128 ms 95576 KB Output is correct
24 Correct 138 ms 95580 KB Output is correct
25 Correct 130 ms 95576 KB Output is correct
26 Correct 39 ms 95320 KB Output is correct
27 Correct 134 ms 95580 KB Output is correct
28 Correct 111 ms 95580 KB Output is correct
29 Correct 113 ms 95504 KB Output is correct
30 Correct 72 ms 95580 KB Output is correct
31 Correct 69 ms 95580 KB Output is correct
32 Correct 71 ms 95580 KB Output is correct
33 Correct 118 ms 95812 KB Output is correct
34 Correct 118 ms 95576 KB Output is correct
35 Correct 116 ms 95576 KB Output is correct

Subtask #2
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 95064 KB Output is correct
2 Correct 70 ms 95556 KB Output is correct
3 Correct 70 ms 95576 KB Output is correct
4 Correct 74 ms 95692 KB Output is correct
5 Runtime error 90 ms 192848 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 95064 KB Output is correct
2 Correct 117 ms 95580 KB Output is correct
3 Correct 123 ms 96088 KB Output is correct
4 Correct 127 ms 95824 KB Output is correct
5 Runtime error 90 ms 192964 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 95296 KB Output is correct
2 Correct 25 ms 95064 KB Output is correct
3 Correct 35 ms 95020 KB Output is correct
4 Correct 25 ms 95068 KB Output is correct
5 Correct 78 ms 95548 KB Output is correct
6 Correct 66 ms 95576 KB Output is correct
7 Correct 50 ms 95512 KB Output is correct
8 Correct 80 ms 95576 KB Output is correct
9 Correct 80 ms 95696 KB Output is correct
10 Correct 73 ms 95500 KB Output is correct
11 Correct 75 ms 95568 KB Output is correct
12 Correct 98 ms 95584 KB Output is correct
13 Correct 159 ms 95816 KB Output is correct
14 Correct 146 ms 95820 KB Output is correct
15 Correct 113 ms 95576 KB Output is correct
16 Correct 109 ms 95580 KB Output is correct
17 Correct 113 ms 95580 KB Output is correct
18 Correct 114 ms 95576 KB Output is correct
19 Correct 58 ms 95420 KB Output is correct
20 Correct 57 ms 95572 KB Output is correct
21 Correct 58 ms 95576 KB Output is correct
22 Correct 59 ms 95580 KB Output is correct
23 Correct 128 ms 95576 KB Output is correct
24 Correct 138 ms 95580 KB Output is correct
25 Correct 130 ms 95576 KB Output is correct
26 Correct 39 ms 95320 KB Output is correct
27 Correct 134 ms 95580 KB Output is correct
28 Correct 111 ms 95580 KB Output is correct
29 Correct 113 ms 95504 KB Output is correct
30 Correct 72 ms 95580 KB Output is correct
31 Correct 69 ms 95580 KB Output is correct
32 Correct 71 ms 95580 KB Output is correct
33 Correct 118 ms 95812 KB Output is correct
34 Correct 118 ms 95576 KB Output is correct
35 Correct 116 ms 95576 KB Output is correct
36 Correct 22 ms 95064 KB Output is correct
37 Correct 70 ms 95556 KB Output is correct
38 Correct 70 ms 95576 KB Output is correct
39 Correct 74 ms 95692 KB Output is correct
40 Runtime error 90 ms 192848 KB Execution killed with signal 11
41 Halted 0 ms 0 KB -