some programs!

cs101/dh_20260917_03.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <sstream>
+
+using namespace std;
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    string token;
+    float coord[2];
+
+    for (int i = 0; getline(cin, token, ','); i++) {
+        coord[i] = stof(token);
+    }
+
+    if (-1 <= coord[0] && coord[0] <= 1 && -1 <= coord[1] && coord[1] <= 1) {
+        cout << "yes" << endl;
+    } else {
+        cout << "no" << endl;
+    }
+
+    return 0;
+}