建立二维数组:
C++ int dp[101][101];
JAVA int[][] dp = new int[m][n];
dp=[[0 for k1 in rang n] for k2 in range(m)]
s[::-1] python切片的格式[startstep]

建立二维数组:
C++ int dp[101][101];
JAVA int[][] dp = new int[m][n];
dp=[[0 for k1 in rang n] for k2 in range(m)]
s[::-1] python切片的格式[startstep]