| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 496459 |
2021-12-21T08:37:00 Z |
LptN21 |
PIN (CEOI10_pin) |
C++14 |
|
30 ms |
15204 KB |
#include <bits/stdc++.h>
using namespace std;
#define fastIO ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL);
#define PI acos(-1.0)
#define eps 1e-9
#define FF first
#define SS second
// VECTOR (6)
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define sz(v) int((v).size())
#define all(v) (v).begin(), (v).end()
#define uniq(v) sort(all( (v) )), (v).resize( unique(all( (v) )) - (v).begin() );
// BIT (6)
#define CNTBIT(x) __builtin_popcountll(x)
#define ODDBIT(x) __builtin_parityll(x)
#define MASK(i) (1LL<<(i))
#define BIT(x, i) (((x)>>(i))&1)
#define SUBSET(big, small) (((big)&(small))==(small))
#define MINBIT(x) (x)&(-x)
//typedef
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> ii;
/* CODE BELOW */
const int N = 5e4 + 7, M = 4;
const ll oo = 1e18 + 7;
const int MOD = 1e9 + 7;
int n, m, k, t;
const int BASE = 37;
int pw[M]{1};
int a[N][M];
const int MX = 1874161 + 7;
int cnt[MX];
int bit[MX];
int getv(char c) {
if('0' <= c && c <= '9') return c - '0' + 1;
return c - 'a' + 12;
}
signed main() {
//freopen("test.inp", "r", stdin);
//freopen("test.out", "w", stdout);
//fastIO;
scanf("%d%d\n", &n, &m); char ch[M];
for(int i=1;i<=n;i++) {
scanf("%s\n", &ch);
for(int j=0;j<M;j++) {
a[i][j] = getv(ch[j]);
}
for(int j=0;j<MASK(M);j++) {
int hs = 0, _cnt = 0;
for(int l=0;l<M;l++) {
hs= hs*BASE + a[i][l]*BIT(j, l);
_cnt+=BIT(j, l);
}
cnt[hs]++, bit[hs] = _cnt;
}
}
ll ans[M+1]; memset(ans, 0, sizeof ans);
for(int i=0;i<MX;i++) if(cnt[i]) {
ans[bit[i]]+= 1LL*cnt[i]*(cnt[i]-1)/2;
}
ans[3]-= ans[4];
ans[2]-= 3*ans[3] + 6*ans[4];
ans[1]-= 2*ans[2] + 3*ans[3] + 4*ans[4];
ans[0]-= ans[1] + ans[2] + ans[3] + ans[4];
printf("%lld", ans[M-m]);
return 0;
}
Compilation message
pin.cpp: In function 'int main()':
pin.cpp:56:17: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[4]' [-Wformat=]
56 | scanf("%s\n", &ch);
| ~^ ~~~
| | |
| char* char (*)[4]
pin.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
53 | scanf("%d%d\n", &n, &m); char ch[M];
| ~~~~~^~~~~~~~~~~~~~~~~~
pin.cpp:56:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
56 | scanf("%s\n", &ch);
| ~~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
3404 KB |
Output is correct |
| 2 |
Correct |
4 ms |
3404 KB |
Output is correct |
| 3 |
Correct |
7 ms |
3404 KB |
Output is correct |
| 4 |
Correct |
11 ms |
3788 KB |
Output is correct |
| 5 |
Correct |
17 ms |
3844 KB |
Output is correct |
| 6 |
Correct |
14 ms |
3876 KB |
Output is correct |
| 7 |
Correct |
11 ms |
3792 KB |
Output is correct |
| 8 |
Correct |
11 ms |
3788 KB |
Output is correct |
| 9 |
Correct |
15 ms |
4080 KB |
Output is correct |
| 10 |
Correct |
16 ms |
4260 KB |
Output is correct |
| 11 |
Correct |
11 ms |
3904 KB |
Output is correct |
| 12 |
Correct |
15 ms |
4104 KB |
Output is correct |
| 13 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 14 |
Correct |
15 ms |
3788 KB |
Output is correct |
| 15 |
Correct |
17 ms |
4220 KB |
Output is correct |
| 16 |
Incorrect |
24 ms |
15028 KB |
Output isn't correct |
| 17 |
Incorrect |
29 ms |
15204 KB |
Output isn't correct |
| 18 |
Incorrect |
21 ms |
15052 KB |
Output isn't correct |
| 19 |
Incorrect |
29 ms |
15104 KB |
Output isn't correct |
| 20 |
Incorrect |
30 ms |
15172 KB |
Output isn't correct |
