Add solutions

1367A. Short Substrings.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main() {
+
+    int n;
+    scanf("%d", &n);
+
+    char str[1001];
+    while (n--) {
+        scanf("%s", str);
+
+        for (int i=0; i<strlen(str); i+=2) {
+            printf("%c", str[i]);
+        }
+        printf("%c\n", str[strlen(str) - 1]);
+    }
+
+    return 0;
+}

1703A. YES or YES.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+int main() {
+
+    int tc;
+    scanf("%d", &tc);
+
+    char str[4];
+    while (tc--) {
+        scanf("%s", str);
+
+        for (int i=0; i<strlen(str); i++) {
+            str[i] = tolower(str[i]);
+        }
+
+        if ((strcmp(str, "yes") == 0)) {
+            printf("YES\n");
+        } else {
+            printf("NO\n");
+        }
+    }
+
+    return 0;
+}

1742A. Sum.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void sort_array(int arr[], int size) {
+    for (int i=0; i<size; i++) {
+        for (int j=i+1; j<size; j++) {
+            if (arr[i] > arr[j]) {
+                int tmp = arr[i];
+                arr[i] = arr[j];
+                arr[j] = tmp;
+            }
+        }
+    }
+}
+
+int main() {
+
+    int tc;
+    scanf("%d", &tc);
+
+    while (tc--) {
+        int n[3];
+        for (int i=0; i<3; i++) {
+            scanf("%d", &n[i]);
+        }
+
+        sort_array(n, 3);
+
+        if (n[0] + n[1] == n[2]) {
+            printf("YES\n");
+        } else {
+            printf("NO\n");
+        }
+    }
+
+    return 0;
+}

1742B. Increasing.c

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void sort_array(int arr[], int size) {
+    for (int i=0; i<size; i++) {
+        for (int j=i+1; j<size; j++) {
+            if (arr[i] > arr[j]) {
+                int tmp = arr[i];
+                arr[i] = arr[j];
+                arr[j] = tmp;
+            }
+        }
+    }
+}
+
+int main() {
+
+    int tc;
+    scanf("%d", &tc);
+
+    while (tc--) {
+        int n;
+        scanf("%d", &n);
+
+        int a[n];
+        for (int i=0; i<n; i++) {
+            scanf("%d", &a[i]);
+        }
+
+        sort_array(a, n);
+
+        int chk = 0;
+        for (int i=0; i<n; i++) {
+            if (a[i] == a[i+1]) {
+                chk = 1;
+            }
+        }
+
+        if (chk) {
+            printf("NO\n");
+        } else {
+            printf("YES\n");
+        }
+    }
+
+    return 0;
+}

32B. Borze.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main() {
+
+    char str[201], str_out[201];
+    scanf("%s", str);
+
+    for (int i=0; i<strlen(str); i++) {
+        if (str[i] == '.') {
+            strcat(str_out, "0");
+        }
+        if (str[i] == '-' && str[i+1] == '.') {
+            strcat(str_out, "1");
+            i++;
+        }
+        if (str[i] == '-' && str[i+1] == '-') {
+            strcat(str_out, "2");
+            i++;
+        }
+    }
+
+    printf("%s\n", str_out);
+
+    return 0;
+}

630A. Again Twenty Five!.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+
+    long long int n;
+    scanf("%lld", &n);
+
+    printf("25\n");
+
+    return 0;
+}

758A. Holiday Of Equality.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void sort_array(int arr[], int size) {
+    for (int i=0; i<size; i++) {
+        for (int j=i+1; j<size; j++) {
+            if (arr[i] > arr[j]) {
+                int tmp = arr[i];
+                arr[i] = arr[j];
+                arr[j] = tmp;
+            }
+        }
+    }
+}
+
+int main() {
+
+    int tc;
+    scanf("%d", &tc);
+
+    int a[tc];
+    for (int i=0; i<tc; i++) {
+        scanf("%d", &a[i]);
+    }
+
+    sort_array(a, tc);
+
+    int sum=0;
+    for (int i=0; i<tc; i++) {
+        if (a[i] < a[tc-1]) {
+            sum += a[tc-1] - a[i];
+        }
+    }
+
+    printf("%d\n", sum);
+
+    return 0;
+}