http://poj.org/problem?id=2557 #include<iostream> #include"string.h" using namespace std; int width[210],n; int ans[210][210]; char fold[210]; bool init() { int i,j; cin>>fold; if(cin.fail())return 0; n=strlen(fold); for(i=0;i<n;i++) { for(j=1;i+j<n&&i-j>=0&&fold[i+j]+fold[i-j]=='A'+'V';j++) ; width[i]=j; } return 1; } inline int get_ans(int a,int b) { return (a>b)?0:ans[a][b]; } void doit() { int i,j,k,t,s1,s2,l; for(i=0;i<n;i++) ans[i][i]=1; for(l=1;l<n;l++) for(i=0;i+l<n;i++) { j=i+l; ans[i][j]=9999; for(k=i;k<=j;k++) if( ( j-k<k-i ? j-k:k-i ) < width[k] ) { s1 = get_ans(i,k-1); s2 = get_ans(k+1,j); t= 1+( s1 > s2 ? s1:s2 ); if(t<ans[i][j])ans[i][j]=t; } } } int main() { while(init()) { doit(); cout<<ans[0][n-1]<<endl; } return 0; }
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