Submission #287526

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
287526	2020-08-31 18:58:04	PeppaPig	PIN (CEOI10_pin)	C++14	100 / 100	783 ms	12268 KiB

pin

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#include <bits/stdc++.h>
#define long long long
using namespace std;
const int N = 5e4 + 5;
const int B = 98765431;
int n, d;
map<long, int> mp[1 << 4];
vector<int> bit[5];
char S[N][4];
long get_hash(char *s, int b) {
    long ret = 0;
    for(int i = 0; i < 4; i++) if(b >> i & 1)
        ret = ret * B + s[i];
    return ret;
}
int main() {
    scanf("%d %d", &n, &d);
    for(int i = 0; i < (1 << 4); i++)
        bit[__builtin_popcount(i)].emplace_back(i);
    for(int i = 1; i <= n; i++) {
        scanf(" %s", S[i]); 
        for(int j = 0; j < (1 << 4); j++) 
            ++mp[j][get_hash(S[i], j)];
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

pin.cpp: In function 'int main()':
pin.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |     scanf("%d %d", &n, &d);
      |     ~~~~~^~~~~~~~~~~~~~~~~
pin.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |         scanf(" %s", S[i]);
      |         ~~~~~^~~~~~~~~~~~~

• Subtask 1: 100 / 100