oj.uz

답안 #145618

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
145618 2019-08-20T14:00:42 Z MKopchev 시간이 돈 (balkan11_timeismoney) C++14
90 / 100
 2000 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;
}
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(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);
    }

    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);

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

Compilation message

timeismoney.cpp: In function 'int main()':
timeismoney.cpp:96:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i%i",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
timeismoney.cpp:99:14: 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

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 31 ms 760 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 31 ms 376 KB Output is correct
15 Correct 23 ms 376 KB Output is correct
16 Correct 364 ms 376 KB Output is correct
17 Correct 356 ms 504 KB Output is correct
18 Correct 365 ms 504 KB Output is correct
19 Execution timed out 2053 ms 732 KB Time limit exceeded
20 Execution timed out 2031 ms 760 KB Time limit exceeded