hdu 1864 最大报销额 dp

#include <map>
#include <set>
#include <queue>
#include <stack>
#include <cmath>
#include <time.h>
#include <vector>
#include <cstdio>
#include <string>
#include <iomanip>
///cout << fixed << setprecision(13) << (double) x << endl;
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <algorithm>

using namespace std;

#define lson l, mid, rt << 1
#define rson mid + 1, r, rt << 1 | 1
#define ls rt << 1
#define rs rt << 1 | 1
#define pi acos(-1.0)
#define eps 1e-8
#define Mp(a, b) make_pair(a, b)
#define asd puts("asdasdasdasdasdf");
typedef long long ll;
//typedef __int64 LL;
const int inf = 0x3f3f3f3f;
const int N = 3000050;
const ll mod = 1e9+7;

int dp
;
int v
, w
;
double Q;
int q, n;

int main()
{
    while( ~scanf("%lf%d", &Q, &n ) && n ) {
        q = (int) (Q*100);
        int cnt = 0;
        for( int i = 1, m; i <= n; ++i ) {
            char tp;
            double sum = 0, tmp;
            double sum1 = 0, sum2 = 0, sum3 = 0;
            bool OK = 1;
            scanf("%d", &m);
            getchar();
            for( int j = 1; j <= m; ++j ) {
                scanf("%c%*c%lf", &tp, &tmp );
                getchar();
                if( !OK )
                    continue;
                if( tp != 'A' && tp != 'B' && tp != 'C' ) {
                    OK = 0;
                    continue;
                }
                else if( tp == 'A' ) 
                    sum1 += tmp;
                else if( tp == 'B' )
                    sum2 += tmp;
                else if( tp == 'C' )
                    sum3 += tmp;
                sum += tmp;
                if( sum > 1000 || sum1 > 600 || sum2 > 600 || sum3 > 600 )
                    OK = 0;
            }
            if( OK ) {
                w[++cnt] = (int) ( sum * 100 );
                v[cnt] = w[cnt];
            }
        }
        memset( dp, 0, sizeof( dp ) );
        for( int i = 1; i <= cnt; ++i ) {
            for( int j = q; j >= v[i]; --j ) {
                dp[j] = max( dp[j], dp[j-v[i]] + w[i] );
            }
        }
        int ans = 0;
        for( int i = 1; i <= q; ++i )
            ans = max( ans, dp[i] );
        printf("%.02f\n", (double)ans / 100.0);
    }
    return 0;
}