'commit'

LuoGu/RuMen/P1146_2.cpp

@@ -0,0 +1,161 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+//思路：打表找规律，也是思考问题的重要方法，一题两解，是一道简单直白的试题
+int main() {
+    int n;
+    cin >> n;
+    cout << n << endl;//据打表的n有n次
+    for (int i = 1; i <= n; i++) {
+        for (int j = 1; j <= n; j++) {
+            if ((i % 2 == 1 && j <= i) || (i % 2 == 0 && j > i))
+                cout << "0";
+            else
+                cout << "1";
+        }
+        cout << endl;
+    }//据打表的
+    return 0;
+}
+/*
+
+2
+01
+11
+
+--------------------
+4
+0111
+1100
+0001
+1111
+
+--------------------
+6
+011111
+110000
+000111
+111100
+000001
+111111
+
+--------------------
+8
+01111111
+11000000
+00011111
+11110000
+00000111
+11111100
+00000001
+11111111
+
+--------------------
+10
+0111111111
+1100000000
+0001111111
+1111000000
+0000011111
+1111110000
+0000000111
+1111111100
+0000000001
+1111111111
+
+--------------------
+12
+011111111111
+110000000000
+000111111111
+111100000000
+000001111111
+111111000000
+000000011111
+111111110000
+000000000111
+111111111100
+000000000001
+111111111111
+
+--------------------
+14
+01111111111111
+11000000000000
+00011111111111
+11110000000000
+00000111111111
+11111100000000
+00000001111111
+11111111000000
+00000000011111
+11111111110000
+00000000000111
+11111111111100
+00000000000001
+11111111111111
+
+--------------------
+16
+0111111111111111
+1100000000000000
+0001111111111111
+1111000000000000
+0000011111111111
+1111110000000000
+0000000111111111
+1111111100000000
+0000000001111111
+1111111111000000
+0000000000011111
+1111111111110000
+0000000000000111
+1111111111111100
+0000000000000001
+1111111111111111
+
+--------------------
+18
+011111111111111111
+110000000000000000
+000111111111111111
+111100000000000000
+000001111111111111
+111111000000000000
+000000011111111111
+111111110000000000
+000000000111111111
+111111111100000000
+000000000001111111
+111111111111000000
+000000000000011111
+111111111111110000
+000000000000000111
+111111111111111100
+000000000000000001
+111111111111111111
+
+--------------------
+20
+01111111111111111111
+11000000000000000000
+00011111111111111111
+11110000000000000000
+00000111111111111111
+11111100000000000000
+00000001111111111111
+11111111000000000000
+00000000011111111111
+11111111110000000000
+00000000000111111111
+11111111111100000000
+00000000000001111111
+11111111111111000000
+00000000000000011111
+11111111111111110000
+00000000000000000111
+11111111111111111100
+00000000000000000001
+11111111111111111111
+*/