1. 函数交互测试

https://hydro.ac/d/system_test/record/61a1845753a50c11fd2bd623

Hydro/system_test/1/1.cpp

@@ -0,0 +1,22 @@
+#include "coin.h"
+
+using std::cin;
+using std::cout;
+using std::endl;
+
+int n, c[105], ans;
+
+int main() {
+    n = getn();
+    for (int i = 1; i <= n; i++) {
+        for (int j = 1; j <= 1000; j++) {
+            c[i] += !!query(i);
+        }
+    }
+    ans = 1;
+    for (int i = 2; i <= n; i++) {
+        if (c[i] <= c[ans]) ans = i;
+    }
+    submit(ans);
+    return 0;
+}

Hydro/system_test/1/coin.h

@@ -0,0 +1,44 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+namespace erwqergdczxv {
+    static int n, m, cnt;
+    static bool hasUsedGetN = false;
+    static bool hasSubmitted = false;
+
+    void RE() {
+        puts("re");
+        exit(0);
+    }
+
+    int getn() {
+        if (hasUsedGetN) RE();
+        cin >> n;
+        hasUsedGetN = 1;
+        m = rand() % n + 1;
+        return n;
+    }
+
+    int query(int x) {
+        if (!hasUsedGetN || hasSubmitted) RE();
+        cnt++;
+        if (cnt > 100000) RE();
+        if (x == m)
+            return (rand() % 10 <= 3);
+        else
+            return (rand() % 10 <= 4);
+    }
+
+    void submit(int x) {
+        if (hasSubmitted) RE();
+        if (x == m)
+            puts("ok");
+        else
+            puts("wa");
+        hasSubmitted = 1;
+    }
+}  // namespace erwqergdczxv
+
+using erwqergdczxv::getn;
+using erwqergdczxv::query;
+using erwqergdczxv::submit;

Hydro/system_test/1/data/coin.h

@@ -0,0 +1,45 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+namespace ahfiuasykjbvzkw {
+    static int n, m, cnt;
+    static bool hasUsedGetN = false;
+    static bool hasSubmitted = false;
+
+    void RE() {
+        puts("re");
+        exit(0);
+    }
+
+    int getn() {
+        if (hasUsedGetN) RE();
+        cin >> n;
+        hasUsedGetN = 1;
+        m = rand() % n + 1;
+        return n;
+    }
+
+    int query(int x) {
+        if (!hasUsedGetN || hasSubmitted) RE();
+        cnt++;
+        if (cnt > 100000) RE();
+        if (x == m)
+            return (rand() % 10 <= 3);
+        else
+            return (rand() % 10 <= 4);
+    }
+
+    void submit(int x) {
+        if (hasSubmitted) RE();
+        if (x == m)
+            puts("ok532124524657743124323");
+        else
+            puts("wa");
+        hasSubmitted = 1;
+    }
+}  // namespace ahfiuasykjbvzkw
+
+using ahfiuasykjbvzkw::getn;
+using ahfiuasykjbvzkw::query;
+using ahfiuasykjbvzkw::submit;

Hydro/system_test/1/data/config.yaml

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+type: default
+
+filename: null
+
+checker_type: testlib
+checker: spj.cc
+
+user_extra_files:
+  - coin.h
+
+time: 100ms
+memory: 256m
+
+cases:
+  - input: data1.in
+  - input: data2.in
+  - input: data3.in
+  - input: data4.in
+  - input: data5.in
+  - input: data6.in
+  - input: data7.in
+  - input: data8.in
+  - input: data9.in
+  - input: data10.in

Hydro/system_test/1/data/spj.cc

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+/**
+ * @file spj.cc
+ * @author Macesuted Kysic
+ * @date 2021-02-04
+ * 
+ * @copyright Copyright (c) 2021
+ * 
+ */
+
+#include <string>
+
+#include "testlib.h"
+
+int main(int argc, char* argv[]) {
+    registerTestlibCmd(argc, argv);
+    std::string s = ouf.readToken();
+    if (s == "ok532124524657743124323")
+        quitf(_ok, "Correct");
+    else
+        quitf(_wa, "Wrong Answer");
+}