POJ 1423 Greatest Common Increasing Subsequence【裸LCIS】
#include<stdio.h> #include<string.h> #include<algorithm> #include<iostream> using namespace std; const int maxn = 500+50; int dp[maxn][maxn]; int a[maxn],b[maxn]; int m,n; /**** 求序列 A 長度為 N 和序列 B 長度為 M 的 LCS 序列下標從 1 開始 */ int LCS() { for(int i = 1; i <= n; i++) { int tmp = 0; //記錄在i確定,且a[i]>b[j]的時候dp[i,j]的最大值 for(int j = 1; j <= m; j++) { dp[i][j] = dp[i-1][j]; if(a[i] > b[j]) { tmp = dp[i-1][j]; } else if(a[i] == b[j]) dp[i][j] = tmp+1; } } //for(int i = 1; i <= m; i++) printf("%d ", dp[n][i]); printf("\n"); int ans = 0; for(int i = 1; i <= m; i++) ans = max(ans, dp[n][i]); return ans; } int main() { int T; scanf("%d", &T); while(T--) { memset(dp,0,sizeof(dp)); scanf("%d", &n); for(int i = 1; i <= n; i++) scanf("%d", &a[i]); scanf("%d", &m); for(int j = 1; j <= m; j++) scanf("%d", &b[j]); printf("%d\n",LCS()); if(T != 0) printf("\n"); } }
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