P3. 输出测试

https://hydro.ac/d/system_test/record/61581bd297ec9cde15d81a24

Hydro/d/system_test/3/3.cpp

@@ -0,0 +1,39 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n;
+
+inline int read() {
+    int x = 0, w = 1;
+    char c;
+    while (!isdigit(c)) {
+        if (c == '-') w = -1;
+        c = getchar();
+    }
+    while (isdigit(c)) {
+        x = x * 10 + (c - '0');
+        c = getchar();
+    }
+    return x * w;
+}
+
+void write(int x) {
+    if (x < 0) {
+        putchar('-');
+        x = -x;
+    }
+    if (x > 9) write(x / 10);
+    putchar(x % 10 ^ 48);
+    return;
+}
+
+int main() {
+    n = read();
+    for (int i = 1; i <= n; i++) {
+        write(i);
+        putchar(' ');
+    }
+    putchar('\n');
+    return 0;
+}