# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
135384 |
2019-07-24T04:33:33 Z |
이온조(#3249) |
PIN (CEOI10_pin) |
C++14 |
|
662 ms |
11972 KB |
#include <bits/stdc++.h>
using namespace std;
int N, D;
unordered_map<string, int> mp;
string S[50009];
string make(string S, int msk) {
for(int i=0; i<4; i++) if((msk >> i) & 1) S[i] = '_';
return S;
}
long long solve1() {
long long ans = 0;
for(int i=1; i<=N; i++) {
ans += mp[make(S[i], 1)];
ans += mp[make(S[i], 2)];
ans += mp[make(S[i], 4)];
ans += mp[make(S[i], 8)];
}
return ans;
}
long long solve2() {
long long ans = 0;
for(int i=1; i<=N; i++) {
ans += mp[make(S[i], 3)];
ans += mp[make(S[i], 5)];
ans += mp[make(S[i], 9)];
ans += mp[make(S[i], 6)];
ans += mp[make(S[i], 10)];
ans += mp[make(S[i], 12)];
ans -= 3*mp[make(S[i], 1)];
ans -= 3*mp[make(S[i], 2)];
ans -= 3*mp[make(S[i], 4)];
ans -= 3*mp[make(S[i], 8)];
}
return ans;
}
long long solve3() {
long long ans = 0;
for(int i=1; i<=N; i++) {
ans += mp[make(S[i], 14)];
ans += mp[make(S[i], 13)];
ans += mp[make(S[i], 11)];
ans += mp[make(S[i], 7)];
ans -= 2*mp[make(S[i], 3)];
ans -= 2*mp[make(S[i], 5)];
ans -= 2*mp[make(S[i], 9)];
ans -= 2*mp[make(S[i], 6)];
ans -= 2*mp[make(S[i], 10)];
ans -= 2*mp[make(S[i], 12)];
ans += 3*mp[make(S[i], 1)];
ans += 3*mp[make(S[i], 2)];
ans += 3*mp[make(S[i], 4)];
ans += 3*mp[make(S[i], 8)];
}
return ans;
}
int main() {
cin.tie(0); cout.tie(0);
ios::sync_with_stdio(0);
cin >> N >> D;
for(int i=1; i<=N; i++) {
cin >> S[i];
for(int j=1; j<16; j++) ++mp[make(S[i], j)];
}
for(auto& it: mp) --it.second;
long long ans = 0;
if(D == 1) cout << solve1() / 2;
if(D == 2) cout << solve2() / 2;
if(D == 3) cout << solve3() / 2;
if(D == 4) cout << (1LL*N*(N-1) - solve1() - solve2() - solve3()) / 2;
return 0;
}
Compilation message
pin.cpp: In function 'int main()':
pin.cpp:75:12: warning: unused variable 'ans' [-Wunused-variable]
long long ans = 0;
^~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
2424 KB |
Output is correct |
2 |
Correct |
9 ms |
2424 KB |
Output is correct |
3 |
Correct |
9 ms |
2296 KB |
Output is correct |
4 |
Correct |
53 ms |
3320 KB |
Output is correct |
5 |
Correct |
65 ms |
3448 KB |
Output is correct |
6 |
Correct |
81 ms |
3320 KB |
Output is correct |
7 |
Correct |
68 ms |
3320 KB |
Output is correct |
8 |
Correct |
70 ms |
3320 KB |
Output is correct |
9 |
Correct |
117 ms |
3268 KB |
Output is correct |
10 |
Correct |
161 ms |
3320 KB |
Output is correct |
11 |
Correct |
88 ms |
3320 KB |
Output is correct |
12 |
Correct |
171 ms |
3320 KB |
Output is correct |
13 |
Correct |
109 ms |
3320 KB |
Output is correct |
14 |
Correct |
145 ms |
3320 KB |
Output is correct |
15 |
Correct |
269 ms |
3320 KB |
Output is correct |
16 |
Correct |
140 ms |
9352 KB |
Output is correct |
17 |
Correct |
372 ms |
11972 KB |
Output is correct |
18 |
Correct |
486 ms |
11352 KB |
Output is correct |
19 |
Correct |
527 ms |
11576 KB |
Output is correct |
20 |
Correct |
662 ms |
11956 KB |
Output is correct |