diff --git a/day14/P5788/1.ans b/day14/P5788/1.ans
new file mode 100644
index 0000000..befeff3
--- /dev/null
+++ b/day14/P5788/1.ans
@@ -0,0 +1 @@
+2 5 4 5 0
\ No newline at end of file
diff --git a/day14/P5788/1.in b/day14/P5788/1.in
new file mode 100644
index 0000000..195dc86
--- /dev/null
+++ b/day14/P5788/1.in
@@ -0,0 +1,2 @@
+5
+1 4 2 3 5
\ No newline at end of file
diff --git a/day14/P5788/P5788.cpp b/day14/P5788/P5788.cpp
index e69de29..6282989 100644
--- a/day14/P5788/P5788.cpp
+++ b/day14/P5788/P5788.cpp
@@ -0,0 +1,50 @@
+#include <cctype>
+#include <cstdio>
+#include <iostream>
+#include <stack>
+using namespace std;
+
+const int MAX_N=3e6+5;
+int readInt();
+int a[MAX_N];
+int ans[MAX_N];
+stack<int>s;
+
+int main(){
+    const int n=readInt();
+    for(int i=1;i<=n;i++){
+        a[i]=readInt();
+    }
+    ans[n]=0;
+    s.push(n);
+    for(int i=n-1;i>=1;i--){
+        if (a[i]>=a[s.top()]) {
+            ans[i]=0;
+            s.push(i);
+        }else{
+            ans[i]=s.top();
+            while (s.size()>0&&a[s.top()]>a[i]) {
+                s.pop();
+            }
+            s.push(i);
+        }
+    }
+    for(int i=1;i<=n;i++){
+        cout<<ans[i]<<" ";;
+    }
+    cout<<endl;
+}
+
+int readInt(){
+    int x=0,w=1;
+    char ch=0;
+    while (!isdigit(ch)) {
+        if(ch=='-')w=-1;
+        ch=getchar();
+    }
+    while(isdigit(ch)){
+        x=x*10+(ch-'0');
+        ch=getchar();
+    }
+    return x*w;
+}
\ No newline at end of file
diff --git a/day14/P5788/P5788.json b/day14/P5788/P5788.json
new file mode 100644
index 0000000..bed34b6
--- /dev/null
+++ b/day14/P5788/P5788.json
@@ -0,0 +1,7 @@
+{
+    "files":["P5788.cpp"],
+    "args":["-Wall","-g"],
+    "tests":[
+        {"in":"1.in","ans":"1.ans"}
+    ]
+}
\ No newline at end of file