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Trik

Author: Pakin Olanraktham

View Problem Statement

Source: PROGRAMMING.IN.TH

Difficulty: ?

Tags: Implementation

Prerequisites:

View External Solution

เฉลย

เฉลย 
#include <stdio.h>
#include <string.h>

int main() {
    char t[51];
    scanf("%s", t);
    int p = 1;

    for (int i=0; i<strlen(t); i++) {
        if (t[i] == 'A') {
            if (p == 1) p = 2;
            else if (p == 2) p = 1;
        } else if (t[i] == 'B') {
            if (p == 2) p = 3;
            else if (p == 3) p = 2;
        } else {
            if (p == 1) p = 3;
            else if (p == 3) p = 1;
        }
    }

    printf("%d", p);
}

#include <iostream>

using namespace std;

int main() {
    string t;
    cin >> t;
    int p = 1;

    for (auto i : t) {
        if (i == 'A') {
            if (p == 1) p = 2;
            else if (p == 2) p = 1;
        } else if (i == 'B') {
            if (p == 2) p = 3;
            else if (p == 3) p = 2;
        } else {
            if (p == 1) p = 3;
            else if (p == 3) p = 1;
        }
    }

    cout << p;
}