diff --git a/TangDou/Topic/PrefixAndSuffix/P1719_2.cpp b/TangDou/Topic/PrefixAndSuffix/P1719_2.cpp
index ca81ab8..befc4b0 100644
--- a/TangDou/Topic/PrefixAndSuffix/P1719_2.cpp
+++ b/TangDou/Topic/PrefixAndSuffix/P1719_2.cpp
@@ -8,12 +8,10 @@ int n, ans;
 int main() {
     cin >> n;
     for (int i = 1; i <= n; i++)
-        for (int j = 1; j <= n; j++)
+        for (int j = 1; j <= n; j++) {
             cin >> a[i][j];
-
-    for (int j = 1; j <= n; j++)
-        for (int i = 1; i <= n; i++)
             s[i][j] = s[i - 1][j] + a[i][j];
+        }
 
     for (int i = 1; i <= n; i++) {
         for (int k = 1; k <= i; k++) {