BZOJ 1012 线段树或单调队列

#include<bits/stdc++.h>
using namespace std;
#pragma comment(linker, "/STACK:102400000,102400000")
#define FF(i,a,b) for (int i=a;i<=b;i++)
#define F(i,b,a)  for (int i=b;i>=a;i--)
#define mes(a,b)  memset(a,b,sizeof(a))
#define INF 0x3f3f3f3f
typedef long long ll;
const int N = 2e5+10;
const ll inf=1e18;

int M, k;
ll D, tr[N<<2], t;
void updata(int ro, int L, int R, int p, ll x)
{
    if(L==R && L==p) { tr[ro]=(tr[ro]+x)%D; return ; }
    int mid=L+((R-L)>>1);
    if(p<=mid) updata(ro<<1, L, mid, p, x);
    else updata(ro<<1|1, mid+1, R, p, x);
    tr[ro]=max(tr[ro<<1], tr[ro<<1|1]);
}
ll query(int ro, int L, int R, int l, int r)
{
    if(L==l && R==r) return tr[ro];
    int mid=L+((R-L)>>1);
    if(r<=mid) return query(ro<<1, L, mid, l, r);
    else if(mid<l) return query(ro<<1|1, mid+1, R, l, r);
    else return max(query(ro<<1, L, mid, l, mid), query(ro<<1|1, mid+1, R, mid+1, r));
}
int main()
{
    scanf("%d %lld", &M, &D);
    ll x;
    char ch[10];
    FF(i,1,M) {
        scanf("%s %lld", ch, &x);
        if(ch[0]==‘A‘) updata(1, 1, M, k+1, x+t), k++;
        else {
            t=query(1, 1, M, k-x+1, k);
            printf("%lld\n", t);
        }
    }

    return 0;
}

#include<bits/stdc++.h>
using namespace std;
#pragma comment(linker, "/STACK:102400000,102400000")
#define FF(i,a,b) for (int i=a;i<=b;i++)
#define F(i,b,a)  for (int i=b;i>=a;i--)
#define mes(a,b)  memset(a,b,sizeof(a))
#define INF 0x3f3f3f3f
typedef long long ll;
const int N = 2e5+10;

int M, k;
ll D, a[N], mx[N], t;
int main()
{
    scanf("%d %lld", &M, &D);
    char ch[10];
    ll x;
    FF(cas,1,M) {
        scanf("%s %lld", ch, &x);
        if(ch[0]==‘A‘) {
            a[++k]=(x+t)%D;
            F(i,k,0) {
                if(mx[i]<a[k]) mx[i]=a[k];
                else break;
            }
        }
        else printf("%lld\n", t=mx[k-x+1]);
    }

    return 0;
}