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0_0_20611933_25198.cpp: In function 'int main()':
0_0_20611933_25198.cpp:2:800: error: 'memset' was not declared in this scope
     using namespace std; const int maxn=1005;__int64 n,m;__int64 cnt[maxn];int c[maxn][maxn]; int son(int n){    int t = 1;    while (t <= n) t=t<<1|1;    t = (t - 1) / 2;    t = (t - 1) / 2;    int sum = n - 1 - t;    if (sum > 2 * t + 1)    {        sum = 2 * t + 1;    }    return sum;} void calc_c() {    for (int i = 0; i < maxn; i++)     {        c[i][0] = c[i][i] = 1;        for (int j = 1; j < i; j++)         {            c[i][j] = (c[i - 1][j - 1] + c[i - 1][j]) % m;        }    }} __int64 slove(int n){    if(cnt[n])        return cnt[n];    if(n==0||n==1)        return 1;    int left=son(n);    int right=(n-1)-left;    return cnt[n]=( (slove(left)*slove(right) )%m )*(__int64)c[n-1][left]%m;}int main(){    int T;    scanf("%d",&T);    while(T--)    {        memset(cnt,0,sizeof(cnt));        scanf("%I64d%I64d",&n,&m);        calc_c();        __int64 ans=slove(n);        printf("%I64d\n",ans);    }    return 0;}
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