Submission #1111125

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111125		modwwe	Šarenlist (COCI22_sarenlist)	C++17	110 / 110	9 ms	592 KiB

Main

#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(k) (1<<k)
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int inf = 1e14;
const int mod2 = 1e9 + 7;
const int  mod1 = 998244353;
const ll 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
{
    long double a;
    int b;
};
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;

};
ll n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,t,lim,w,l,r;
int kk;
int el = 19;
main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        //  fou(task);
    }
    NHP
    /// cin>>s1;
   // modwwe
    phongbeo(),down
    // checktime
}
int in[61];
int ou[61];
vector<int> v[61];
int a[16];
int b[16];
int f[61];
int par[61];
void dfs(int x,int y)
{
    in[x]=++dem;
    par[x]=y;
    for(auto f:v[x])
        if(f!=y)
            dfs(f,x);
    ou[x]=dem;
}
bool check(int x,int y)
 {
     if(in[x]<=in[y]&&in[y]<=ou[x]) return 1;
      return 0;
 }
struct dsconcu
{
    ib dsu[61];
    void rest()
    {
        for(int i=1; i<=n; i++)
            dsu[i]= {1,i};
            dem=n-1;
    }
    int get(int x)
    {
        if(dsu[x].b!=x)return dsu[x].b=get(dsu[x].b);
        return x;
    }
    void noi(int x,int y)
    {
        if(x==0||y==0) return;
        x=get(x);
        y=get(y);
        if(x==y) return;
        dem--;
        if(dsu[x].a<dsu[y].a) swap(x,y);
        dsu[x].a+=dsu[y].a;
        dsu[y].b=x;
    }
}ds;
void skibidi(int x,int y)
{
    s4=0;
    while(!check(x,y))
    {
        s4=x;
        if(!check(par[x],y))
            ds.noi(x,par[x]);
        x=par[x];
    }
    s5=0;
    while(y!=x)
    {
        s5=y;
        if(par[y]!=x)
            ds.noi(y,par[y]);
        y=par[y];
    }
    ds.noi(s4,s5);
}
void phongbeo()
{
    cin>>n>>m>>k;
    f[0]=1;
    for(int i=1; i<=n; i++)
        f[i]=f[i-1]*k%mod2;
    for(int i=1; i<n; i++)
        cin>>l>>r,v[l].pb(r),v[r].pb(l);
    dfs(1,0);
    for(int i=1; i<=m; i++)
        cin>>a[i]>>b[i];
        s6=0;
         for(int i=0;i<(1<<m);i++)
         {
              ds.rest();
              for(int j=0;j<m;j++)
                if(bit(i,j))
              {
                  skibidi(a[j+1],b[j+1]);
              }
              int total=1;
               if(sobit(i)%2==1)total=-1;
              s6=add(s6,f[dem]*total);
         }
          cout<<s6;
}

Compilation message (stderr)

Main.cpp:57:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   57 | main()
      | ^~~~
Main.cpp: In member function 'void dsconcu::rest()':
Main.cpp:96:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   96 |         for(int i=1; i<=n; i++)
      |         ^~~
Main.cpp:98:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   98 |             dem=n-1;
      |             ^~~
Main.cpp: In function 'void phongbeo()':
Main.cpp:146:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  146 |     for(int i=1; i<=m; i++)
      |     ^~~
Main.cpp:148:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  148 |         s6=0;
      |         ^~
Main.cpp: In function 'int main()':
Main.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)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:61:9: note: in expansion of macro 'fin'
   61 |         fin(task);
      |         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 65 / 65