diff --git a/P15255.cpp b/P15255.cpp
new file mode 100644
index 0000000..5701cfd
--- /dev/null
+++ b/P15255.cpp
@@ -0,0 +1,37 @@
+#include<bits/stdc++.h>
+using namespace std;
+int n,k;
+int cs[25][25][25];
+int calc(int now){
+    int ans=0;
+    for(int i=0;i<n;i++){
+        if(!(now&(1<<i))) continue;
+        for(int j=0;j<n;j++){
+            if((now&(1<<j))) continue;
+            for(int k=j;k<n;k++){
+                if(!(now&(1<<k))){
+                    ans+=cs[i][j][k];
+                }
+            }
+        }
+    }
+    return ans;
+}
+int main(){
+    scanf("%d%d",&n,&k);
+    for(int i=1;i<=k;++i){
+        int x,y,z;
+        scanf("%d%d%d",&x,&y,&z);
+        x--,y--,z--;
+        if(y>z) swap(y,z);
+        cs[x][y][z]++;
+    }
+    int maxans=0,count=0;
+    for(int i=0;i<=(1<<n)-1;i++){ // 二进制表示棋盘
+        int ci=calc(i);
+        if(ci>maxans) count=1, maxans=ci;
+        else if(ci==maxans) count++;
+    }
+    printf("%d %d\n",maxans,count);
+    return 0;
+}
\ No newline at end of file