oj.uz

Submission #950860

# Submission time Handle Problem Language Result Execution time Memory
950860 2024-03-20T19:56:16 Z Nexus Two Currencies (JOI23_currencies) C++17
10 / 100
 92 ms 192896 KB 
#include <bits/stdc++.h>
#define ll long long

using namespace std;

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

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

void dfs(ll node,ll par)
{
    pa[node]=par;
    dep[node]=dep[par]+1;
    for(auto i:v[node])if(i!=par)dfs(i,node);
}



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);
    }
    
    dep[0]=-1,pa[1]=0;
    dfs(1,0);
    while(q--)
    {
        p.clear();
        cin>>s>>t>>x>>y;
        if(dep[s]<dep[t])swap(s,t);
        while(dep[s]>dep[t])
        {
            for(auto i:ed[s][pa[s]])p.push_back(i);
            s=pa[s];
        }
        while(s!=t)
        {
            for(auto i:ed[s][pa[s]])p.push_back(i);
            s=pa[s];
            
            for(auto i:ed[t][pa[t]])p.push_back(i);
            t=pa[t];
        }
        
        sort(p.begin(),p.end());
        n=p.size();
        for(ll i=0;i<n;++i)
        if(y>=p[i])y-=p[i];
        else
        {
            x-=n-i;
            break;
        }
        
        cout<<(x>=0?x:-1)<<'\n';
    }
    
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 95060 KB Output is correct
2 Correct 21 ms 95064 KB Output is correct
3 Correct 21 ms 95064 KB Output is correct
4 Correct 21 ms 95308 KB Output is correct
5 Correct 24 ms 95324 KB Output is correct
6 Correct 25 ms 95324 KB Output is correct
7 Correct 24 ms 95324 KB Output is correct
8 Correct 25 ms 95324 KB Output is correct
9 Correct 27 ms 95324 KB Output is correct
10 Correct 24 ms 95324 KB Output is correct
11 Correct 24 ms 95324 KB Output is correct
12 Correct 25 ms 95320 KB Output is correct
13 Correct 86 ms 95576 KB Output is correct
14 Correct 88 ms 95580 KB Output is correct
15 Correct 48 ms 95524 KB Output is correct
16 Correct 43 ms 95320 KB Output is correct
17 Correct 42 ms 95324 KB Output is correct
18 Correct 48 ms 95520 KB Output is correct
19 Correct 23 ms 95756 KB Output is correct
20 Correct 24 ms 95504 KB Output is correct
21 Correct 23 ms 95324 KB Output is correct
22 Correct 23 ms 95324 KB Output is correct
23 Correct 65 ms 95500 KB Output is correct
24 Correct 65 ms 95492 KB Output is correct
25 Correct 60 ms 95324 KB Output is correct
26 Correct 24 ms 95324 KB Output is correct
27 Correct 27 ms 95324 KB Output is correct
28 Correct 23 ms 95260 KB Output is correct
29 Correct 23 ms 95324 KB Output is correct
30 Correct 24 ms 95520 KB Output is correct
31 Correct 24 ms 95324 KB Output is correct
32 Correct 24 ms 95512 KB Output is correct
33 Correct 90 ms 95600 KB Output is correct
34 Correct 85 ms 95580 KB Output is correct
35 Correct 85 ms 95604 KB Output is correct

Subtask #2
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 95068 KB Output is correct
2 Correct 24 ms 95324 KB Output is correct
3 Correct 24 ms 95324 KB Output is correct
4 Correct 24 ms 95324 KB Output is correct
5 Runtime error 88 ms 192760 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 21 ms 95064 KB Output is correct
2 Correct 86 ms 95580 KB Output is correct
3 Correct 85 ms 95576 KB Output is correct
4 Correct 89 ms 95596 KB Output is correct
5 Runtime error 92 ms 192896 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 43 ms 95060 KB Output is correct
2 Correct 21 ms 95064 KB Output is correct
3 Correct 21 ms 95064 KB Output is correct
4 Correct 21 ms 95308 KB Output is correct
5 Correct 24 ms 95324 KB Output is correct
6 Correct 25 ms 95324 KB Output is correct
7 Correct 24 ms 95324 KB Output is correct
8 Correct 25 ms 95324 KB Output is correct
9 Correct 27 ms 95324 KB Output is correct
10 Correct 24 ms 95324 KB Output is correct
11 Correct 24 ms 95324 KB Output is correct
12 Correct 25 ms 95320 KB Output is correct
13 Correct 86 ms 95576 KB Output is correct
14 Correct 88 ms 95580 KB Output is correct
15 Correct 48 ms 95524 KB Output is correct
16 Correct 43 ms 95320 KB Output is correct
17 Correct 42 ms 95324 KB Output is correct
18 Correct 48 ms 95520 KB Output is correct
19 Correct 23 ms 95756 KB Output is correct
20 Correct 24 ms 95504 KB Output is correct
21 Correct 23 ms 95324 KB Output is correct
22 Correct 23 ms 95324 KB Output is correct
23 Correct 65 ms 95500 KB Output is correct
24 Correct 65 ms 95492 KB Output is correct
25 Correct 60 ms 95324 KB Output is correct
26 Correct 24 ms 95324 KB Output is correct
27 Correct 27 ms 95324 KB Output is correct
28 Correct 23 ms 95260 KB Output is correct
29 Correct 23 ms 95324 KB Output is correct
30 Correct 24 ms 95520 KB Output is correct
31 Correct 24 ms 95324 KB Output is correct
32 Correct 24 ms 95512 KB Output is correct
33 Correct 90 ms 95600 KB Output is correct
34 Correct 85 ms 95580 KB Output is correct
35 Correct 85 ms 95604 KB Output is correct
36 Correct 21 ms 95068 KB Output is correct
37 Correct 24 ms 95324 KB Output is correct
38 Correct 24 ms 95324 KB Output is correct
39 Correct 24 ms 95324 KB Output is correct
40 Runtime error 88 ms 192760 KB Execution killed with signal 11
41 Halted 0 ms 0 KB -