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de232z
bc1
a

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z232ed
1cb
a

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#include <iostream>
#include <fstream>

int main() {
    std::ifstream file("test.txt", std::ios::binary | std::ios::ate);
    while(file.tellg() > 0) {
        file.seekg(-1, std::ios_base::cur);
        int c = file.peek();
        if(c > 0) {
            std::cout << (char) c;
        }
    }
    file.close();
    return 0;
}