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Submission #145619

# Submission time Handle Problem Language Result Execution time Memory
145619 2019-08-20T14:02:17 Z MKopchev timeismoney (balkan11_timeismoney) C++14
90 / 100
 1507 ms 760 KB 
#include<bits/stdc++.h>
using namespace std;
const int nmax=200+42;
struct edge
{
    int u,v;
    int time,money;
    long long cost;
};
int n,m;
edge inp[nmax*nmax];
pair<long long,long long> best={1e9,1e9};
vector< pair<int,int> > output;

int parent[nmax];
int root(int node)
{
    if(parent[node]==node)return node;
    parent[node]=root(parent[node]);
    return parent[node];
}
bool cmp(edge a,edge b)
{
    return a.cost<b.cost;
}
pair<long long,long long> mst(pair<long long,long long> add)
{
    for(int i=0;i<n;i++)
        parent[i]=i;

    pair<long long,long long> now={0,0};
    vector< pair<int,int> > in={};
    for(int i=1;i<=m;i++)
    {
        inp[i].cost=add.first*inp[i].time+add.second*inp[i].money;
        //cout<<i<<" -> "<<inp[i].cost<<endl;
    }

    sort(inp+1,inp+m+1,cmp);
    for(int i=1;i<=m;i++)
    {
        if(root(inp[i].u)!=root(inp[i].v))
        {
            parent[root(inp[i].u)]=root(inp[i].v);
            in.push_back({inp[i].u,inp[i].v});
            now.first+=inp[i].time;
            now.second+=inp[i].money;
        }
    }

    if(now.first*now.second<best.first*best.second)
    {
        best=now;
        output=in;
    }

    //cout<<add.first<<" "<<add.second<<" -> "<<now.first<<" "<<now.second<<endl;

    //system("pause");

    return now;
}

const int inf=255;
bool test(pair<long long,long long> q)
{
    return q.first>inf||q.second>inf;
}

double T;

void print()
{
    printf("%lld %lld\n",best.first,best.second);
    for(auto k:output)
        printf("%i %i\n",k.first,k.second);
    exit(0);
}

void solve(pair<long long,long long> l,pair<long long,long long> result_l,pair<long long,long long> r,pair<long long,long long> result_r,int in)
{
    if(1.0*(clock()-T)/CLOCKS_PER_SEC>1.5)print();
    if(result_l==result_r)return;

    if(abs(result_l.first-result_r.first)<=1)return;
    if(abs(result_l.second-result_r.second)<=1)return;

    if(min(l.first,l.second)*min(r.first,r.second)>=best.first*best.second)return;

    if(in>20)return;
    if(test(l)||test(r))return;

    pair<long long,long long> av={l.first+r.first,l.second+r.second};

    pair<long long,long long> result_av=mst(av);

    //if(result_l==result_av||result_r==result_av)return;

    solve(l,result_l,av,result_av,in+1);
    solve(av,result_av,r,result_r,in+1);
}

bool blocked[nmax*nmax];

int m_;
int main()
{
    scanf("%i%i",&n,&m);
    for(int i=1;i<=m;i++)
    {
        scanf("%i%i%i%i",&inp[i].u,&inp[i].v,&inp[i].time,&inp[i].money);
    }
    T=clock();

    for(int mx=1;mx<=255;mx++)
    {
        for(int i=0;i<n;i++)parent[i]=i;

        for(int i=1;i<=m;i++)
            if(inp[i].cost<=mx&&inp[i].time<=mx)
            {
                parent[root(inp[i].u)]=root(inp[i].v);
            }

        for(int i=1;i<=m;i++)
            if(inp[i].cost>mx&&inp[i].time>mx&&root(inp[i].u)==root(inp[i].v))
            {
                blocked[i]=1;
            }
    }

    m_=0;
    for(int i=1;i<=m;i++)
        if(blocked[i]==0)
        {
            m_++;
            inp[m_]=inp[i];
        }
    m=m_;
    //cout<<m_<<endl;

    solve({1,0},mst({1,0}),{0,1},mst({0,1}),0);

    print();
    return 0;
}

Compilation message

timeismoney.cpp: In function 'int main()':
timeismoney.cpp:108:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i%i",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
timeismoney.cpp:111:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%i%i%i%i",&inp[i].u,&inp[i].v,&inp[i].time,&inp[i].money);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
90.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 4 ms 376 KB Output is correct
7 Correct 11 ms 480 KB Output is correct
8 Correct 36 ms 632 KB Output is correct
9 Correct 3 ms 256 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 4 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 34 ms 376 KB Output is correct
15 Correct 26 ms 420 KB Output is correct
16 Correct 377 ms 480 KB Output is correct
17 Correct 377 ms 504 KB Output is correct
18 Correct 384 ms 380 KB Output is correct
19 Incorrect 1507 ms 760 KB Output isn't correct
20 Incorrect 1506 ms 632 KB Output isn't correct