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#include <iostream> | |
#include <iomanip> | |
#include <vector> | |
#include <algorithm> | |
#include <numeric> | |
#include <functional> | |
#include <cmath> | |
#include <queue> | |
#include <stack> | |
#include <set> | |
#include <map> | |
#include <sstream> | |
#include <string> | |
#define repd(i,a,b) for (int i=(a);i<(b);i++) | |
#define rep(i,n) repd(i,0,n) | |
#define var auto | |
#define mod 1000000007 | |
#define inf 2147483647 | |
#define nil -1 | |
typedef long long ll; | |
using namespace std; | |
inline int input(){ | |
int a; | |
cin >> a; | |
return a; | |
} | |
template <typename T> | |
inline void output(T a, int p) { | |
if(p){ | |
cout << fixed << setprecision(p) << a << "\n"; | |
} | |
else{ | |
cout << a << "\n"; | |
} | |
} | |
// end of template | |
int main() { | |
cin.tie(0); | |
// source code | |
int K = input(); | |
int N = input(); | |
int num = pow(3, K); | |
vector<int> seq(K, 0); | |
vector<string> V(N), W(N); | |
rep(i, N){ | |
cin >> V[i] >> W[i]; | |
} | |
vector<string> str(K); | |
rep(i, num){ | |
rep(j, K){ | |
str[j] = ""; | |
} | |
int impflag = false; | |
int tmp = i; | |
rep(j, K){ | |
seq[j] = tmp % 3 + 1; | |
tmp = (tmp - seq[j] + 1) / 3; | |
} | |
rep(j, N){ | |
int ln = 0; | |
rep(k, V[j].size()){ | |
ln += seq[V[j][k] - '1']; | |
} | |
if (ln != W[j].size()) { | |
impflag = true; | |
} | |
} | |
if (impflag) { | |
continue; | |
} | |
rep(j, N){ | |
int now = 0; | |
rep(k, V[j].size()){ | |
if (str[V[j][k] - '1'] == "" || str[V[j][k] - '1'] == W[j].substr(now, seq[V[j][k] - '1'])) { | |
str[V[j][k] - '1'] = W[j].substr(now, seq[V[j][k] - '1']); | |
now += seq[V[j][k] - '1']; | |
} | |
else{ | |
impflag = true; | |
} | |
} | |
} | |
if (impflag) { | |
continue; | |
} | |
else{ | |
rep(j, K){ | |
output(str[j], 0); | |
} | |
return 0; | |
} | |
} | |
return 0; | |
} |
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