如题，vscode都过了，但交就炸了，试了在线ide没re但输出全部都是0，大家有什么头猪吗

#include<bits/stdc++.h>
using namespace std;
const int maxn=200050;
#define ll long long 
inline ll read()
{
    ll x=0;
    ll f=1;
    char ch=getchar();
    for(;!isdigit(ch);ch=getchar())f=(ch!='-');
    for(;isdigit(ch);ch=getchar())x=x*10+(ch^48);
    return x*f;
}
ll maxx[maxn][21];
int r,n;
ll m;
void insert(ll x)
{
    r++;
    maxx[r][0]=x;
    for(int i=1;r-(1<<i)>=0;i++)
    {
        maxx[r][i]=max(maxx[r][i-1],maxx[r-(1<<(i-1))][i-1]);
    }
}
inline ll query(int l,int r)
{
    int k=log2(r-l+1);
    return max(maxx[r][k],maxx[l+(1<<k)-1][k]);
}
int main()
{
    n=read();
    m=read();
    int t=0;
    for(int i=1;i<=n;i++)
    {
        char ch=getchar();
        if(ch=='A')
        {
            ll w=read();
            t=(t+w)%m;
            insert(t);
        }
        else
        {
            ll len=read();
            t=query(r-len+1,r);
            printf("%d\n",t);
        }
        
    }
    return 0;
}