'commit'

TangDou/CSP-J/J2-2022/LeetCode664_dp.cpp

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+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 110;
+/*
+https://leetcode.cn/problems/strange-printer/
+
+输入：s = "aaabbb"
+输出：2
+解释：首先打印 "aaa" 然后打印 "bbb"。
+示例 2：
+
+输入：s = "aba"
+输出：2
+解释：首先打印 "aaa" 然后在第二个位置打印 "b" 覆盖掉原来的字符 'a'。
+
+*/
+int f[N][N];
+
+int main() {
+    string s;
+
+    cin >> s;
+
+    int n = s.size();
+    memset(f, 0x3f, sizeof f);
+    for (int i = n - 1; i >= 0; i--) {
+        f[i][i] = 1;
+
+        for (int j = i + 1; j < n; j++) {
+            if (s[i] == s[j])
+                f[i][j] = f[i][j - 1];
+            else {
+                for (int k = i; k < j; k++)
+                    f[i][j] = min(f[i][j], f[i][k] + f[k + 1][j]);
+            }
+        }
+    }
+    cout << f[0][n - 1] << endl;
+    return 0;
+}