oj.uz

답안 #376226

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
376226 2021-03-11T05:14:33 Z daniel920712 Designated Cities (JOI19_designated_cities) C++14
6 / 100
 499 ms 66028 KB 
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <map>
#include <set>

using namespace std;
vector < pair < long long , long long > > Next[200005];
map < long long , long long > all[200005];
set < long long > vis[200005];
long long ans[200005];
long long xx[200005];
long long DP[5][200005];
void F(long long here,long long fa)
{
    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            ans[1]+=i.second;
            F(i.first,here);
        }
    }
}
void F2(long long here,long long fa)
{
    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            F2(i.first,here);
        }
    }
}
void F3(long long here,long long fa)
{
    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            vis[here].insert(i.first);
            F3(i.first,here);
        }
    }
}
void F4(long long here,long long fa)
{
    long long x=1e18,y=0,z,tt;
    for(auto i:Next[here]) if(i.first!=fa) F4(i.first,here);
    DP[0][here]=1e18;
    DP[1][here]=1e18;
    DP[2][here]=1e18;

    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            DP[0][here]+=DP[0][i.first];
            DP[0][here]+=all[here][i.first];
        }
    }
    DP[1][here]=DP[0][here];
    y=0;
    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            x=min(x,0-DP[0][i.first]-all[here][i.first]+DP[1][i.first]);
            y+=DP[0][i.first]+all[here][i.first];
        }
    }

    DP[2][here]=DP[0][here]+x;
    DP[1][here]=min(DP[1][here],y+x);
    x=1e18;
    y=0;
    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            x=min(x,0-DP[0][i.first]-all[here][i.first]+DP[2][i.first]+all[here][i.first]);
            y+=DP[0][i.first]+all[here][i.first];
        }
    }
    DP[2][here]=min(DP[2][here],y+x);

    x=1e18;
    y=0;
    z=1e18;

    for(auto i:Next[here])
    {
        if(i.first!=fa)
        {
            tt=0-DP[0][i.first]-all[here][i.first]+DP[2][i.first]+all[here][i.first];
            if(tt<x)
            {
                z=x;
                x=tt;
            }
            else if(tt<z)
            {
                z=tt;
            }

            y+=DP[0][i.first]+all[here][i.first];
        }
    }
    DP[2][here]=min(DP[2][here],y+x+z);
    //for(auto i:Next[here]) if(i.first!=fa) x=min(x,0-DP[0][i.first]-all[here][i.first]+DP[1][i.first]);


}
int main()
{
    long long N,M,i,j,k,a,b,c,d,how=1e18;
    scanf("%lld",&N);

    for(i=1;i<N;i++)
    {

        scanf("%lld %lld %lld %lld",&a,&b,&c,&d);
        Next[a].push_back(make_pair(b,c));
        Next[b].push_back(make_pair(a,d));
        all[a][b]=c;
        all[b][a]=d;
    }
    for(i=1;i<=N;i++) xx[i]=1e18;
    if(N<=16)
    {
        for(i=0;i<(1<<N);i++)
        {
            a=0;
            b=0;
            for(j=1;j<=N;j++) vis[j].clear();
            for(j=0;j<N;j++)
            {
                if(i&(1<<j))
                {
                    F3(j+1,-1);
                    a++;
                }
            }
            for(j=1;j<=N;j++) for(auto k:Next[j]) if(vis[j].find(k.first)==vis[j].end()) b+=all[k.first][j];
            xx[a]=min(xx[a],b);
        }
        scanf("%lld",&M);
        while(M--)
        {
            scanf("%lld",&a);
            printf("%lld\n",xx[a]);
        }
    }
    else
    {
        scanf("%d %d",&a,&b);
        if(b==1)
        {
            F(1,-1);
            F2(1,-1);
            for(i=1;i<=N;i++)
            {
                how=min(how,ans[i]);
            }
            printf("%lld\n",how);
        }
        else
        {
            F4(1,-1);
            printf("%lld\n",DP[2][1]);
        }

    }

    return 0;
}

Compilation message

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:157:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  157 |         scanf("%d %d",&a,&b);
      |                ~^     ~~
      |                 |     |
      |                 int*  long long int*
      |                %lld
designated_cities.cpp:157:20: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
  157 |         scanf("%d %d",&a,&b);
      |                   ~^     ~~
      |                    |     |
      |                    int*  long long int*
      |                   %lld
designated_cities.cpp:117:23: warning: unused variable 'k' [-Wunused-variable]
  117 |     long long N,M,i,j,k,a,b,c,d,how=1e18;
      |                       ^
designated_cities.cpp:118:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  118 |     scanf("%lld",&N);
      |     ~~~~~^~~~~~~~~~~
designated_cities.cpp:123:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  123 |         scanf("%lld %lld %lld %lld",&a,&b,&c,&d);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:148:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  148 |         scanf("%lld",&M);
      |         ~~~~~^~~~~~~~~~~
designated_cities.cpp:151:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  151 |             scanf("%lld",&a);
      |             ~~~~~^~~~~~~~~~~
designated_cities.cpp:157:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  157 |         scanf("%d %d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 199 ms 23788 KB Output is correct
3 Correct 184 ms 23808 KB Output is correct
4 Correct 197 ms 23916 KB Output is correct
5 Correct 190 ms 24044 KB Output is correct
6 Correct 193 ms 23788 KB Output is correct
7 Correct 190 ms 23788 KB Output is correct
8 Correct 204 ms 23788 KB Output is correct
9 Correct 195 ms 23876 KB Output is correct
10 Correct 183 ms 23788 KB Output is correct
11 Correct 212 ms 23788 KB Output is correct

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Incorrect 452 ms 61932 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 23788 KB Output is correct
2 Incorrect 499 ms 66028 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 199 ms 23788 KB Output is correct
3 Correct 184 ms 23808 KB Output is correct
4 Correct 197 ms 23916 KB Output is correct
5 Correct 190 ms 24044 KB Output is correct
6 Correct 193 ms 23788 KB Output is correct
7 Correct 190 ms 23788 KB Output is correct
8 Correct 204 ms 23788 KB Output is correct
9 Correct 195 ms 23876 KB Output is correct
10 Correct 183 ms 23788 KB Output is correct
11 Correct 212 ms 23788 KB Output is correct
12 Correct 16 ms 23788 KB Output is correct
13 Incorrect 17 ms 24300 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Incorrect 452 ms 61932 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 199 ms 23788 KB Output is correct
3 Correct 184 ms 23808 KB Output is correct
4 Correct 197 ms 23916 KB Output is correct
5 Correct 190 ms 24044 KB Output is correct
6 Correct 193 ms 23788 KB Output is correct
7 Correct 190 ms 23788 KB Output is correct
8 Correct 204 ms 23788 KB Output is correct
9 Correct 195 ms 23876 KB Output is correct
10 Correct 183 ms 23788 KB Output is correct
11 Correct 212 ms 23788 KB Output is correct
12 Correct 16 ms 23788 KB Output is correct
13 Incorrect 452 ms 61932 KB Output isn't correct
14 Halted 0 ms 0 KB -