题解 | 坐标移动

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define BUFFER_LENGTH (10001)

int get_token_distance(char* token, int token_length) {
    int distance = 0;
    for (int i=1; i<token_length; i++) {
        int temp = token[i] - '0';
        if (temp < 0 || temp > 9) {
            distance = 0;
            break;
        }
        if (i == 1) {
            distance += temp * pow(10, token_length-2);
        } else {
            distance += temp;
        }
    }

    return distance;
}

int main() {
    char buffer[BUFFER_LENGTH];
    scanf("%s", buffer);

    int x, y = 0;

    char* token = strtok(buffer, ";");
    while (token != NULL) {
        int token_length = strlen(token);
        if (token_length == 2 || token_length == 3) {
            char direction = token[0];
            if (direction == 'A') {
                x -= get_token_distance(token, token_length);
            } else if (direction == 'D') {
                x += get_token_distance(token, token_length);
            } else if (direction == 'W') {
                y += get_token_distance(token, token_length);
            } else if (direction == 'S') {
                y -= get_token_distance(token, token_length);
            }
            
        }
        token = strtok(NULL, ";");
    }

    printf("%d,%d\n", x, y);

    return 0;
}