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답안 #1108175

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1108175 2024-11-03T08:26:44 Z modwwe Designated Cities (JOI19_designated_cities) C++17
16 / 100
 1205 ms 98632 KB 
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
#define int long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define mask(i) (1<<i)
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
};
void phongbeo();
const int inf = 1e18;
const int mod2 = -1e9+7;
const int  mod1 = 998244353;
const int base=67;
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0) x+=mod2;
    return x+y;
}
struct icd
{
    int c,d;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a,b,c,d;
};
struct ie
{
    int a, b, c, d, e;

};

int  n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,limit,w,l,r,last,root,cost;
int kk;
int el = 19;

main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        //  fou(task);
    }
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo(),down
    // checktime
}
vector<int> v[200001];
int par[200001];
id a[200001];
ic dp[200001][3][2];
icd c[200001];
bool vis[200001];
int in[200001];
int ou[200001];
int res[200001];
int kkk[200001];
void dfs(int x,int y)
{
    in[x]=++dem;
    kkk[dem]=x;
    par[x]=y;
    for(auto f:v[x])
        if(f!=y)
            dfs(f,x);
    ou[x]=dem;
}
///ta nhan xet la dinh cua canh x con lon nhat =dinh cua canh x+1 con lon nhat
struct IT
{
    ib t[800001];
    int t2[800001];
    ib mer(ib a,ib b)
    {
        if(a.a>=b.a) return a;
        return b;
    }
    void ff(int x)
    {
        for(int i=x*2; i<=x*2+1; i++)
        {
            t[i].a+=t2[x];
            t2[i]+=t2[x];
        }
        t2[x]=0;
    }
    void build(int node,int l,int r)
    {
        if(l==r)
        {
            t[node].b=kkk[l];
            return;
        }
        int mid=l+r>>1;
        build(node<<1,l,mid);
        build(node<<1|1,mid+1,r);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
    void upd(int node,int l,int r,int l1,int r1,int x)/// find minimum cost
    {
        if(l>r1||r<l1) return;
        if(l>=l1&&r<=r1)
        {
            t[node].a+=x;
            t2[node]+=x;
            return;
        }
        int mid=l+r>>1;
        if(t2[node]!=0) ff(node);
        upd(node<<1,l,mid,l1,r1,x);
        upd(node<<1|1,mid+1,r,l1,r1,x);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
} st; ///->t1=minimum new cost
ic mer(ic a,ic b)
{
    if(a.b<b.b) swap(a,b);
    return {a.a+b.a,a.b,max({a.c,b.c,b.b})};
}
void dfs2(int x,int y)
{
    dp[x][0][0]= {0,0,0};
    for(auto f:v[x])
    {
        if(f!=y)
        {
            dfs2(f,x);
            ///.b .c luu 2 con dc lay
            ///.a la luu cost
            for(int i=0; i<=2; i++)
                for(int j=0; j<2; j++)
                    dp[x][i][j].a+=dp[f][0][0].a+c[f].c;
            for(int i=1; i<=2; i++)
            {
                if(dp[f][i][1].a+c[f].d+dp[x][0][0].a-dp[f][0][0].a-c[f].c<dp[x][i][1].a)
                    dp[x][i][1]=dp[f][i][1],
                                dp[x][i][1].a+=c[f].d+dp[x][0][0].a-dp[f][0][0].a-c[f].c;
            }
            for(int i=2; i>=0; --i)
                for(int j=0; j<=2; j++)
                    if(i+j<=2)
                    {
                        if(dp[x][i+j][0].a>dp[x][i][0].a+dp[f][j][0].a+(j==0)*c[f].c-c[f].c-dp[f][0][0].a)
                            dp[x][i+j][0]=mer(dp[x][i][0],dp[f][j][0]),
                                          dp[x][i+j][0].a+=(j==0)*c[f].c-c[f].c-dp[f][0][0].a;

                        if(i>0&&j>0)
                            if(dp[x][i+j][1].a>dp[x][i][0].a+dp[f][j][0].a+(j==0)*c[f].c-c[f].c-dp[f][0][0].a)
                                dp[x][i+j][1]=mer(dp[x][i][0],dp[f][j][0]),
                                              dp[x][i+j][1].a+=(j==0)*c[f].c-c[f].c-dp[f][0][0].a;
                    }
        }
    }
    for(int i=1; i>=0; i--)
    {
        if(dp[x][i+1][0].a>dp[x][i][0].a)dp[x][i+1][0]=mer({0,x,0},dp[x][i][0]);
        if(dp[x][i+1][1].a>dp[x][i][0].a)dp[x][i+1][1]=mer({0,x,0},dp[x][i][0]);

    }
}
bool check(int x,int y)
{
    if(in[x]<=in[y]&&in[y]<=ou[x]) return 1;
    return 0;
}
void go(int x)
{
    while(!vis[x])
    {
        st.upd(1,1,n,in[x],ou[x],-c[x].c);
        x=par[x];
    }
}
void go2(int y)
{
    int x=l;
    while(!check(x,y))
    {
        vis[x]=1;
        st.upd(1,1,n,in[x],ou[x],c[s2].d);
        st.upd(1,1,n,1,n,-c[s2].d);
        x=par[x];

    }
    l=x;
}
int get()
{
    int s=max(0ll,st.t[1].a);
    go2(st.t[1].b);
    go(st.t[1].b);
    return s;
}
void solve()
{
    for(int i=1; i<n; i++)
        cin>>a[i].a>>a[i].b>>a[i].c>>a[i].d,
            v[a[i].a].pb(a[i].b),
            v[a[i].b].pb(a[i].a);
    dfs(1,0);
    vis[1]=1;
    ou[0]=dem;
    for(int i=1; i<n; i++)
    {
        if(par[a[i].a]==a[i].b)
            swap(a[i].c,a[i].d),swap(a[i].a,a[i].b);
        c[a[i].b]= {a[i].c,a[i].d};
    }
    for(int i=1; i<=n; i++)
        for(int j=0; j<=2; j++)
            for(int f=0; f<2; f++)
                dp[i][j][f]= {inf,0,0};
    st.build(1,1,n);
    dfs2(1,0);
    res[1]=dp[1][1][1].a;
    res[2]=dp[1][2][1].a;
    s2=dp[1][2][1].b;
    l=s2;
    for(int i=2; i<=n; i++)
        if(check(i,s2))
        {
            st.upd(1,1,n,1,n,c[i].d);
            st.upd(1,1,n,in[i],ou[i],-c[i].d);
            vis[i]=1;
        }
        else
        {
            st.upd(1,1,n,in[i],ou[i],c[i].c);
        }
    get();
    for(int i=3; i<=n; i++) res[i]=res[i-1]-get();
    cin>>m;
    for(int i=1; i<=m; i++)
    {
        cin>>l;
        cout<<res[l],down
    }
}
void phongbeo()
{
    cin>>n;
    solve();
}

Compilation message

designated_cities.cpp:75:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   75 | main()
      | ^~~~
designated_cities.cpp: In member function 'void IT::build(long long int, long long int, long long int)':
designated_cities.cpp:134:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  134 |         int mid=l+r>>1;
      |                 ~^~
designated_cities.cpp: In member function 'void IT::upd(long long int, long long int, long long int, long long int, long long int, long long int)':
designated_cities.cpp:148:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  148 |         int mid=l+r>>1;
      |                 ~^~
designated_cities.cpp: In function 'int main()':
designated_cities.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
designated_cities.cpp:79:9: note: in expansion of macro 'fin'
   79 |         fin(task);
      |         ^~~

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 20048 KB Output is correct
2 Incorrect 5 ms 20048 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 20048 KB Output is correct
2 Correct 299 ms 77060 KB Output is correct
3 Correct 393 ms 95816 KB Output is correct
4 Correct 1205 ms 75644 KB Output is correct
5 Correct 328 ms 76992 KB Output is correct
6 Correct 253 ms 79444 KB Output is correct
7 Correct 257 ms 76996 KB Output is correct
8 Correct 397 ms 96392 KB Output is correct
9 Correct 286 ms 78008 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 20048 KB Output is correct
2 Correct 269 ms 77108 KB Output is correct
3 Correct 276 ms 98632 KB Output is correct
4 Correct 221 ms 75460 KB Output is correct
5 Correct 263 ms 76984 KB Output is correct
6 Correct 214 ms 81612 KB Output is correct
7 Correct 201 ms 78008 KB Output is correct
8 Correct 304 ms 89932 KB Output is correct
9 Correct 209 ms 77596 KB Output is correct

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 20048 KB Output is correct
2 Incorrect 5 ms 20048 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 20048 KB Output is correct
2 Correct 299 ms 77060 KB Output is correct
3 Correct 393 ms 95816 KB Output is correct
4 Correct 1205 ms 75644 KB Output is correct
5 Correct 328 ms 76992 KB Output is correct
6 Correct 253 ms 79444 KB Output is correct
7 Correct 257 ms 76996 KB Output is correct
8 Correct 397 ms 96392 KB Output is correct
9 Correct 286 ms 78008 KB Output is correct
10 Correct 4 ms 20048 KB Output is correct
11 Correct 269 ms 77108 KB Output is correct
12 Correct 276 ms 98632 KB Output is correct
13 Correct 221 ms 75460 KB Output is correct
14 Correct 263 ms 76984 KB Output is correct
15 Correct 214 ms 81612 KB Output is correct
16 Correct 201 ms 78008 KB Output is correct
17 Correct 304 ms 89932 KB Output is correct
18 Correct 209 ms 77596 KB Output is correct
19 Correct 4 ms 20220 KB Output is correct
20 Incorrect 223 ms 76876 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 20048 KB Output is correct
2 Incorrect 5 ms 20048 KB Output isn't correct
3 Halted 0 ms 0 KB -