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Submission #173199

# Submission time Handle Problem Language Result Execution time Memory
173199 2020-01-03T14:52:19 Z juggernaut Beautiful row (IZhO12_beauty) C++14
100 / 100
 1660 ms 164500 KB 
//Just try and the idea will come!
#include<bits/stdc++.h>
#define int long long int
using namespace std;
int n,i,a[20],dp[1048576][20],ans,j,tri[20],bin[20],mask;
main(){
    scanf("%lld",&n);
    for(;i<n;i++){
        scanf("%lld",&a[i]);
        dp[1<<i][i]=1;
        bin[i]=__builtin_popcount(a[i]);
        mask=a[i];
        while(mask){
            if(mask%3==1)tri[i]++;
            mask/=3;
        }
    }
    for(mask=0;mask<(1<<n);mask++)
    for(i=0;i<n;i++)
    if(mask&(1<<i))
    for(j=0;j<n;j++)
    if(i!=j)
    if(mask&(1<<j)&&(tri[i]==tri[j]||bin[i]==bin[j]))dp[mask][i]+=dp[mask^(1<<i)][j];
    for(i=0;i<n;i++)ans+=dp[(1<<n)-1][i];
    printf("%lld",ans);
}

Compilation message

beauty.cpp:6:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
beauty.cpp: In function 'int main()':
beauty.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
     ~~~~~^~~~~~~~~~~
beauty.cpp:9:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&a[i]);
         ~~~~~^~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 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 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 508 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 17 ms 2936 KB Output is correct
12 Correct 17 ms 2908 KB Output is correct
13 Correct 78 ms 10548 KB Output is correct
14 Correct 358 ms 41468 KB Output is correct
15 Correct 341 ms 41492 KB Output is correct
16 Correct 369 ms 41344 KB Output is correct
17 Correct 347 ms 41636 KB Output is correct
18 Correct 370 ms 41396 KB Output is correct
19 Correct 1660 ms 164500 KB Output is correct
20 Correct 1557 ms 164420 KB Output is correct