diff --git "a/src/algorithmProblems/boj/B3_31907_GIST_ \354\260\215\352\270\260.c" "b/src/algorithmProblems/boj/B3_31907_GIST_ \354\260\215\352\270\260.c"
new file mode 100644
index 0000000..fd0fedc
--- /dev/null
+++ "b/src/algorithmProblems/boj/B3_31907_GIST_ \354\260\215\352\270\260.c"	
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <math.h>
+
+int M = 4; int N = 3;
+char *original[] = 
+{
+    "G...",
+    ".I.T",
+    "..S."
+};
+
+int main(){
+    int K;
+    scanf("%d",&K);
+    
+    for (int i = 0; i < K*N; i++){
+        int r = (i+K)/K - 1;
+        for (int j = 0; j < K*M; j++){
+            int c = (j+K)/K - 1;
+            printf("%c",original[r][c]);
+        }
+        printf("\n");
+    }
+    
+    return 0;
+}
\ No newline at end of file