dp uva11584

题目链接

#include <bits/stdc++.h>
using namespace std;

const int maxn = 1000+5;
int n,kase,vis[maxn][maxn],p[maxn][maxn],d[maxn];
char s[maxn];

int is_palindrome(int i,int j){
    if(i>j) return 1;
    if(s[i] != s[j]) return 0;

    if(vis[i][j] == kase) return p[i][j];
    vis[i][j] = kase;
    p[i][j] = is_palindrome(i+1,j-1);
    return p[i][j];
}

int main(){
    int T;
    scanf("%d",&T);
    memset(vis,0,sizeof(vis));
    for(kase=1; kase<=T; kase++){
        scanf("%s",s+1);
        n = strlen(s+1);
        d[0] = 0;
        for(int i=1; i<=n; i++){
            d[i] = i+1;
            for(int j=0; j<i; j++)
                if(is_palindrome(j+1,i))
                    d[i] = min(d[i],d[j]+1);
        }

        printf("%d
",d[n]);
    }
}