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pojcs101_M01002_memorable_number.cpp

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+#include <iostream>
+#include <map>
+
+std::map<char, int> charMap;
+
+void initMap() {
+    charMap = {{'0', 0}, {'1', 1}};
+    for (char c: "ABCabc2") { charMap[c] = 2; }
+    for (char c: "DEFdef3") { charMap[c] = 3; }
+    for (char c: "GHIghi4") { charMap[c] = 4; }
+    for (char c: "JKLjkl5") { charMap[c] = 5; }
+    for (char c: "MNOmno6") { charMap[c] = 6; }
+    for (char c: "PQRSpqrs7") { charMap[c] = 7; }
+    for (char c: "TUVtuv8") { charMap[c] = 8; }
+    for (char c: "WXYZwxyz9") { charMap[c] = 9; }
+}
+
+void runDataset() {
+    int stringCount;
+    std::map<std::string, int> duplicatedCounts;
+    std::cin >> stringCount;
+    for (int _ = 0; _ < stringCount; _++) {
+        std::string str;
+        // int currentNumber = 0;
+        std::string currentNumber;
+        std::cin >> str;
+        for (char c: str) {
+            if (c == '-') { continue; }
+            currentNumber += static_cast<char>(charMap[c] + '0');
+        }
+        duplicatedCounts[currentNumber]++;
+    }
+    bool noDuplicate = true;
+    for (const auto &[number, count]: duplicatedCounts) {
+        if (count > 1) {
+            noDuplicate = false;
+            std::cout << number.substr(0, 3) << "-" << number.substr(3) << " " << count << std::endl;
+        }
+    }
+    if (noDuplicate) {
+        std::cout << "No duplicates." << std::endl;
+    }
+    // std::cout << std::endl;
+}
+
+int main() {
+    initMap();
+
+    // int datasetCount;
+    // std::cin >> datasetCount;
+    // for (int _ = 0; _ < datasetCount; _++) {
+    //     runDataset();
+    // }
+    runDataset();
+
+
+    return 0;
+}