poj 1742 Coins

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#include <cstdio>#include <cstring>using namespace std;const int M = 100005;const int N = 105;int d[M];int n,a[N],c[N],m;void solve(){memset(d, -1, sizeof(d));d[0] = 0;for(int i = 0; i < n; i++){for(int j = 0; j <= m; j++){if(d[j] >= 0) d[j] = c[i];else if(j < a[i] || d[j-a[i]]<= 0)d[j] = -1;else d[j] = d[j-a[i]]-1;}}int ans = 0;for(int i = 1; i <= m; i++)if(d[i]>=0) ans++;printf("%d\n", ans);}int main(){//freopen("in.txt", "r", stdin);while(~scanf("%d %d", &n, &m) &&(n||m)){for(int i = 0; i < n; i++) scanf("%d", a+i);for(int i = 0; i < n; i++) scanf("%d", c+i);solve();}return 0;}

　　

poj 1742 Coins