oj.uz

답안 #145620

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
145620 2019-08-20T14:03:34 Z MKopchev 시간이 돈 (balkan11_timeismoney) C++14
95 / 100
 1507 ms 784 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>5)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)in++;
    else in=0;

    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:109:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i%i",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
timeismoney.cpp:112:14: 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
95.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 256 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 4 ms 376 KB Output is correct
6 Correct 4 ms 376 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 33 ms 760 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 3 ms 256 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 15 ms 376 KB Output is correct
15 Correct 11 ms 376 KB Output is correct
16 Incorrect 176 ms 376 KB Output isn't correct
17 Correct 187 ms 376 KB Output is correct
18 Correct 185 ms 376 KB Output is correct
19 Correct 1506 ms 760 KB Output is correct
20 Correct 1507 ms 784 KB Output is correct