0311

.vscode/c.code-snippets

@@ -0,0 +1,43 @@
+{
+  "Init file": {
+    "prefix": "init",
+    "body": ["#include <stdio.h>", "", "int main() {", "    return 0;", "}"],
+    "description": "Init file"
+  },
+  "Define function swap two var with macro": {
+    "prefix": "fn_swap_macro",
+    "body": ["#define swap(a, b) { typeof(a) temp = a; a = b; b = temp; }"],
+    "description": "Define function swap two var with macro"
+  },
+  "Define function swap two int": {
+    "prefix": "fn_swap",
+    "body": [
+      "void swap(int *a, int *b) {",
+      "    int temp = *a;",
+      "    *a = *b;",
+      "    *b = temp;",
+      "}"
+    ],
+    "description": "Define function swap two int"
+  },
+  "Define function put bool": {
+    "prefix": "fn_putbool",
+    "body": ["#define putbool(x) (printf(\"%s\", (x) ? \"TRUE\" : \"FALSE\"))"],
+    "description": "Define function put bool"
+  },
+  "Define function max": {
+    "prefix": "fake_max",
+    "body": ["#define max(i, j) (((i) > (j)) ? (i) : (j))"],
+    "description": "Define function max"
+  },
+  "Define function min": {
+    "prefix": "fake_min",
+    "body": ["#define min(i, j) (((i) < (j)) ? (i) : (j))"],
+    "description": "Define function min"
+  },
+  "Fake loop": {
+    "prefix": "fake_loop",
+    "body": ["while (0) { // Fake loop", "}"],
+    "description": "Fake loop"
+  }
+}

0311-t/1.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+void swap(char *a, char *b) {
+    char temp = *a;
+    *a = *b;
+    *b = temp;
+}
+
+int main() {
+    char num[3];
+    scanf("%s", num);
+
+    if (num[2] > num[1]) {
+        swap(num + 2, num + 1);
+    }
+    if (num[1] > num[0]) {
+        swap(num + 1, num);
+    }
+    if (num[2] > num[1]) {
+        swap(num + 2, num + 1);
+    }
+    printf("%s\n", num);
+}

0311/1.c

@@ -1,23 +1,16 @@
 #include <stdio.h>
 
-void swap(char *a, char *b) {
-    char temp = *a;
-    *a = *b;
-    *b = temp;
-}
-
 int main() {
-    char num[3];
+    int m, n;
-    scanf("%s", num);
+    scanf("%d %d", &m, &n);
-
+    if (m % 2 != 0) {
-    if (num[2] > num[1]) {
+        m++;
-        swap(num + 2, num + 1);
     }
-    if (num[1] > num[0]) {
+    if (n % 2 != 0) {
-        swap(num + 1, num);
+        n--;
     }
-    if (num[2] > num[1]) {
+    while (0) {
-        swap(num + 2, num + 1);
     }
-    printf("%s\n", num);
+    printf("%d", (m + n) * (n - m + 2) / 2 / 2);
+    return 0;
 }

0311/2.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+int main() {
+    int n, cnt = 0;
+    scanf("%d", &n);
+    printf("%d", (1 + n) * n / 2);
+    return 0;
+    while (0) {
+    }
+}

0311/3.c

@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int main() {
+    int n, cnt = 0, i;
+    scanf("%d", &n);
+    for (i = 1; i <= n; i++) {
+        cnt += (1 + i) * i / 2;
+    }
+    printf("%d", cnt);
+    return 0;
+}

0311/4.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+int main() {
+    int i, cnt = 0;
+    for (i = 1; i <= 597; i += 4) {
+        cnt += i * (i + 2);
+    }
+    printf("%d", cnt);
+    return 0;
+}

0311/5.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+void swap(int *a, int *b) {
+    int temp = *a;
+    *a = *b;
+    *b = temp;
+}
+
+int main() {
+    int m, n;
+    scanf("%d %d", &m, &n);
+    if (m > n) {
+        swap(&m, &n);
+    }
+    if (m % 2 == 0) {
+        m++;
+    }
+    if (n % 2 == 0) {
+        n--;
+    }
+    if (m > n) {
+        printf("0");
+        return 0;
+    }
+    while (0) { // Fake loop
+    }
+    printf("%d", (m + n) * (n - m + 2) / 2 / 2);
+    return 0;
+}

0311/6.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int main() {
+    int m, n, max = -1, min = 51, i;
+    scanf("%d %d", &m, &n);
+
+    for (i = 0; i < m * n; i++) {
+        int a;
+        scanf("%d", &a);
+        if (a > max)
+            max = a;
+        if (a < min)
+            min = a;
+    }
+    printf("%d", max - min);
+
+    return 0;
+}