本文共 850 字,大约阅读时间需要 2 分钟。
class Solution { public: vector pathsWithMaxScore(vector& board) { int N = board.size(); int M = board[0].length(); const long long mod = 1000000007; vector > dp(N+1,vector (M+1,0)); vector > path(N+1,vector (M+1,0)); path[N][M] = 1; for(int i=N-1;i>=0;i--){ for(int j=M-1;j>=0;j--){ if(board[i][j] == 'X') continue; long long score = board[i][j] - '0'; if(board[i][j] == 'S' || board[i][j] == 'E') score = 0; long long mx = max(dp[i+1][j+1],max(dp[i+1][j],dp[i][j+1])); dp[i][j] = mx + score; if(mx == dp[i+1][j+1]) path[i][j] += path[i+1][j+1]; if(mx == dp[i+1][j]) path[i][j] += path[i+1][j]; if(mx == dp[i][j+1]) path[i][j] += path[i][j+1]; path[i][j] %= mod; } } if(path[0][0] == 0) return { 0,0}; return { dp[0][0],path[0][0]}; }};
转载地址:http://ctgci.baihongyu.com/