poj 1283 Moving Computer

这个题与poj1664一样的类型的题目,但是这题的数据量比较大,如果像1664那样做,就会超时,因为有很多重复的计算;

View Code
#include<iostream>

#include<cstdio>

#include<cstdlib>

#include<algorithm>

#include<cmath>

#include<queue>

#include<set>

#include<map>

#include<cstring>

#include<vector>

#include<string>

#define LL long long

using namespace std;

LL dp[224][224];

void Init( )

{

    for( int i = 0 ; i <= 200; i ++ )

    {

         dp[1][i] = 1;dp[i][0] = 1;

         dp[i][1] = 1;

    }

    for( int i = 2 ;i <= 200 ; i++ )

    {

        for( int j = 1; j <=200 ; j ++ )

        {

           if( j >= i ) dp[i][j] = dp[i-1][j] + dp[i][j-i];

           else dp[i][j] = dp[j][j];

        }    

    }

}

int main(  )

{

    int n, m;

    Init();

    while( scanf( "%d %d",&m,&n ),n|m )

    {

        printf( "%I64d\n",dp[n][m-n] );    

    }

    //system( "pause" );

    return 0;

}

 

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