Editorial for A Poem Problem
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
Editorialist:
A Poem Problem is the first problem of the Standard PCS Contest 5. In it, you have a cryptographic cypher which you need to use to either encode or decode a string.
The intended solution is to hold an array or map of characters, which each index mapping to its intended new character. An example implementation in C++ is shown below:
#include <bits/stdc++.h>
using namespace std;
char en[128], de[128];
int N, M;
int main() {
cin >> N >> M;
while (N--) {
char from, to;
cin >> from >> to;
en[from] = to;
de[to] = from;
}
while (M--) {
string t, s;
cin >> t >> s;
auto m = t == "E" ? en : de;
for (auto &c: s) {
if (m[c] == 0)
cout << c;
else
cout << m[c];
}
}
}
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