Submission #729398

#	Time	Username	Problem	Language	Result	Execution time	Memory
729398		onepunchac168	Swapping Cities (APIO20_swap)	C++14	Compilation error	0 ms	0 KiB

swap

#include "swap.h"
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back

typedef long long ll;
typedef pair <ll,ll> ii;
typedef pair <ll,ii> iii;
ll n,m;
ll parent[200005][20];
ll gg;
struct DSU{
    ll lab[200005];
    bool check[200005];
    ll tmp[200005];
    ll countedge[200005];
    void makeset(int u)
    {
        lab[u]=-1;
        check[u]=0;
        tmp[u]=-1;
        countedge[u]=0;
    }
    ll findset(int u)
    {
        if (lab[u]<0)
        {
            return u;
        }
        return lab[u]=findset(lab[u]);
    }
    void Union(int u,int v,ll w)
    {
        int r=findset(u);
        int s=findset(v);
        countedge[u]++;
        countedge[v]++;
        if (r==s)
        {
            if (check[r]==0)
            {
                check[r]=1;
                tmp[r]=w;
            }
            return;
        }
        if (lab[r]>lab[s])
        {
            swap(r,s);
        }
        lab[r]+=lab[s];
        lab[s]=r;
        if (check[r]!=0)


    }
} dsu;
ll solve(ll aa,ll bb)
{
    if (aa==-1&&bb==-1)
    {
        return -1;
    }
    if (aa==-1)
    {
        return bb;
    }
    if (bb==-1)
    {
        return aa;
    }
    return min(aa,bb);
}
void dfs(int u,int vv)
{
    for (auto v:vt[u])
    {
        if (v==vv)
        {
            continue;
        }
        parent[v][0]=u;
        for (int i=1;i<=18;i++)
        {
            parent[v][i]=parent[parent[v][i-1]][i-1];
        }
        dsu.tmp[v]=solve(dsu.tmp[v],dsu.tmp[u]);
        dfs(v,u);
    }
}
void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W) {
    n=N-1;
    m=M-1;
    gg=n;
    vector <iii> vt;
    for (int i=0;i<=2*n+1;i++)
    {
        dsu.makeset(i);
        tmp[i]=-1;
    }
    for (int i=0;i<=m;i++)
    {
        ll u=U[i];
        ll v=V[i];
        ll w=W[i];
        vt.pb({w,{u,v}});
    }
    sort (vt.begin(),vt.end());
    for (auto v:vt)
    {
        dsu.Union(v.se.fi,v.se.se,v.fi);
    }
    dfs(gg,-1);
}

int getMinimumFuelCapacity(int X, int Y) {
    return 0;
}

Compilation message (stderr)

swap.cpp: In member function 'void DSU::Union(int, int, ll)':
swap.cpp:59:5: error: expected primary-expression before '}' token
   59 |     }
      |     ^
swap.cpp: In function 'void dfs(int, int)':
swap.cpp:79:17: error: 'vt' was not declared in this scope; did you mean 'v'?
   79 |     for (auto v:vt[u])
      |                 ^~
      |                 v
swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:102:9: error: 'tmp' was not declared in this scope; did you mean 'tm'?
  102 |         tmp[i]=-1;
      |         ^~~
      |         tm