P1597 语句解析

https://www.luogu.com.cn/record/38654562

problem/P1597/P1597.cpp

@@ -0,0 +1,74 @@
+// https://www.luogu.com.cn/record/38654562
+
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int a, b, c;
+    string s;
+
+    a = b = c = 0;
+    cin >> s;
+
+    for(int i = 0 ; i < s.size() ; i += 5) {
+        cout << s[i] << ' ' << s[i+3] << ' ';
+        switch(s[i]) {
+            case 'a':
+                if('0' <= s[i+3] && s[i+3] <= '9') {
+                    a = s[i+3] - '0';
+                } else {
+                    switch(s[i+3]) {
+                        case 'a':
+                            a = a;
+                            break;
+                        case 'b':
+                            a = b;
+                            break;
+                        case 'c':
+                            a = c;
+                            break;
+                    }
+                }
+                break;
+            case 'b':
+                if('0' <= s[i+3] && s[i+3] <= '9') {
+                    b = s[i+3] - '0';
+                } else {
+                    switch(s[i+3]) {
+                        case 'a':
+                            b = a;
+                            break;
+                        case 'b':
+                            b = b;
+                            break;
+                        case 'c':
+                            b = c;
+                            break;
+                    }
+                }
+                break;
+            case 'c':
+                if('0' <= s[i+3] && s[i+3] <= '9') {
+                    c = s[i+3] - '0';
+                } else {
+                    switch(s[i+3]) {
+                        case 'a':
+                            c = a;
+                            break;
+                        case 'b':
+                            c = b;
+                            break;
+                        case 'c':
+                            c = c;
+                            break;
+                    }
+                }
+                break;
+        }
+        cout << a << ' ' << b << ' ' << c << endl;
+    }
+    printf("%d %d %d\n", a, b, c);
+
+    return 0;
+}