Submission #1083502

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083502		modwwe	Paths (BOI18_paths)	C++17	0 / 100	18 ms	18200 KiB

paths

#pragma GCC optimize("Ofast,unroll-loops")
#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 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=1e9;
const int mod2=998244353;
const int  mod1=998244353;
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;

};

int n,m,s1,s2,s4,s3,sf,k,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,s33,dem3,dem4,l,r,mid,l2,r2;
int  i,s10,s12;
int kk;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
  //  fin(task);
    //fou(task);
#endif
    NHP
    /// cin>>s1;
    //modwwe
    phongbeo();
//checktime
}
int dp[300001][32];
int a[300001];
vector<int> v[300001];
void phongbeo()
{
n=scan();
m=scan();
  for(int i=1;i<=n;i++)
 a[i]=scan(),a[i]--,dp[i][(1<<a[i])]=1;
  for(int i=1;i<=m;i++)
     l=scan(),r=scan(),v[l].pb(r),v[r].pb(l);
     for(int j=1;j<(1<<k);j++)
   for(int i=1;i<=n;i++){
    if(dp[i][j]==0) continue;
         for(auto k:v[i])
             if(!bit(j,a[k])){
             dp[k][j+(1<<a[k])]+=dp[i][j];
             }
             s4+=dp[i][j];
        }
         cout<<s4-n;
}

Compilation message (stderr)

paths.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main()
      | ^~~~
paths.cpp: In function 'void phongbeo()':
paths.cpp:88:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   88 |   for(int i=1;i<=m;i++)
      |   ^~~
paths.cpp:90:6: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   90 |      for(int j=1;j<(1<<k);j++)
      |      ^~~
paths.cpp:93:10: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   93 |          for(auto k:v[i])
      |          ^~~
paths.cpp:97:14: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   97 |              s4+=dp[i][j];
      |              ^~

• Subtask 1: 0 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 27
• Subtask 4: 0 / 30