Permutation Exponentiation and Resource Optimization Algorithms
A. Character Position Mapping
Determining the alphabetical index of an uppercase character relies on ASCII arithmteic. Subtracting the code point of 'A' from the input character yields a zero-based offset. Adding one produces the required one-based rank.
#include <iostream>
int main() {
char letter;
if (std::cin >> letter) { ...
Posted on Sun, 20 Sep 2026 16:37:31 +0000 by zyntrax