Submission #135348

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
135348	2019-07-24T04:02:32 Z	김세빈(#3248)	PIN (CEOI10_pin)	C++14	100 / 100	73 ms	7052 KB

pin

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

vector <ll> V[22];
char S[11], T[11];
ll D[11];
ll n, d;

int main()
{
	ll i, j, k, s;
	
	scanf("%lld%lld", &n, &d);
	
	for(i=0; i<n; i++){
		scanf("%s", S);
		for(j=0; j<4; j++){
			if('0' <= S[j] && S[j] <= '9') T[j] = S[j] - '0';
			else T[j] = S[j] - 'a' + 10;
		}
		for(j=0; j<16; j++){
			for(k=0, s=0; k<4; k++){
				s = s * 36;
				if(~j & (1 << k)){
					s += T[k];
				}
			}
			V[j].push_back(s);
		}
	}
	
	for(i=1; i<16; i++){
		for(j=0, s=0; j<4; j++){
			if(i & (1 << j)) s ++;
		}
		sort(V[i].begin(), V[i].end());
		for(j=0; j<V[i].size(); j=k){
			for(k=j; k<V[i].size() && V[i][j] == V[i][k]; k++);
			D[s] += (k - j) * (k - j - 1) / 2;
		}
	}
	
	D[2] -= D[1] * 3;
	D[3] -= D[2] * 2 + D[1] * 3;
	D[4] -= D[3] + D[2] + D[1];
	
	printf("%lld\n", D[d]);
	
	return 0;
}

Compilation message

pin.cpp: In function 'int main()':
pin.cpp:40:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(j=0; j<V[i].size(); j=k){
            ~^~~~~~~~~~~~
pin.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(k=j; k<V[i].size() && V[i][j] == V[i][k]; k++);
             ~^~~~~~~~~~~~
pin.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &d);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
pin.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", S);
   ~~~~~^~~~~~~~~

Subtask #1

100.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	632 KB	Output is correct
2	Correct	4 ms	632 KB	Output is correct
3	Correct	3 ms	508 KB	Output is correct
4	Correct	28 ms	3648 KB	Output is correct
5	Correct	31 ms	4184 KB	Output is correct
6	Correct	31 ms	4200 KB	Output is correct
7	Correct	25 ms	3540 KB	Output is correct
8	Correct	33 ms	4440 KB	Output is correct
9	Correct	55 ms	6292 KB	Output is correct
10	Correct	62 ms	6972 KB	Output is correct
11	Correct	33 ms	4312 KB	Output is correct
12	Correct	59 ms	6672 KB	Output is correct
13	Correct	36 ms	4696 KB	Output is correct
14	Correct	33 ms	4312 KB	Output is correct
15	Correct	59 ms	6748 KB	Output is correct
16	Correct	47 ms	5568 KB	Output is correct
17	Correct	73 ms	7052 KB	Output is correct
18	Correct	54 ms	5568 KB	Output is correct
19	Correct	70 ms	6296 KB	Output is correct
20	Correct	69 ms	7052 KB	Output is correct