Submission #447017

#	Time	Username	Problem	Language	Result	Execution time	Memory
447017		zaneyu	Fire (JOI20_ho_t5)	C++14	14 / 100	1004 ms	60364 KiB

ho_t5

/*input
20 20
2 1 2 2 1 1 1 1 2 2 2 1 2 1 1 2 1 2 1 1
1 1 14
2 3 18
4 10 15
8 2 17
9 20 20
4 8 19
7 2 20
11 1 5
13 2 8
20 1 20
2 12 15
7 1 14
12 7 18
14 2 17
9 19 20
12 12 12
6 2 15
11 2 15
19 12 17
4 1 20
*/
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<long long, null_type, less_equal<long long>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
//order_of_key #of elements less than x
// find_by_order kth element
using ll = long long;
using ld = long double;
using pii = pair<ll,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
ll mult(ll a,ll b){
    return a*b%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1) res=(res*a)%MOD;
        a=(a*a)%MOD;
        b>>=1;
    }
    return res;
}
const ll maxn=4e5+5;
const ll maxlg=__lg(maxn)+2;
/** Interface */

inline int readChar();
template <class T = ll> inline T readInt(); 
template <class T> inline void writeInt( T x, char end = 0 );
inline void writeChar( int x ); 
inline void writeWord( const char *s );

/** Read */

static const int buf_size = 4096;

inline int getChar() {
    static char buf[buf_size];
    static int len = 0, pos = 0;
    if (pos == len)
        pos = 0, len = fread(buf, 1, buf_size, stdin);
    if (pos == len)
        return -1;
    return buf[pos++];
}

inline int readChar() {
    int c = getChar();
    while (c <= 32)
        c = getChar();
    return c;
}

template <class T>
inline T readInt() {
    int s = 1, c = readChar();
    T x = 0;
    if (c == '-')
        s = -1, c = getChar();
    while ('0' <= c && c <= '9')
        x = x * 10 + c - '0', c = getChar();
    return s == 1 ? x : -x;
}

/** Write */

static int write_pos = 0;
static char write_buf[buf_size];

inline void writeChar( int x ) {
    if (write_pos == buf_size)
        fwrite(write_buf, 1, buf_size, stdout), write_pos = 0;
    write_buf[write_pos++] = x;
}

template <class T> 
inline void writeInt(T x, char end ) {
    if (x < 0)
        writeChar('-'), x = -x;

    char s[24];
    int n = 0;
    while (x || !n)
        s[n++] = '0' + x % 10, x /= 10;
    while (n--)
        writeChar(s[n]);
    if (end)
        writeChar(end);
}

inline void writeWord( const char *s ) {
    while (*s)
        writeChar(*s++);
}

struct Flusher {
    ~Flusher() {
        if (write_pos)
            fwrite(write_buf, 1, write_pos, stdout), write_pos = 0;
    }
} flusher;
struct segt{
    ll seg[4*maxn],lazy[4*maxn];
    int n;
    void resize(int _n){
        n=_n;
    } 
    inline void pushdown(int idx,int l,int r){
        if(!lazy[idx]) return;
        seg[idx]+=(r-l+1)*lazy[idx];
        if(l==r){
            lazy[idx]=0;
            return;
        }
        lazy[idx<<1]+=lazy[idx];
        lazy[idx<<1|1]+=lazy[idx];
        lazy[idx]=0;
    }
    inline void upd(int idx,int l,int r,int ql,int qr,ll x){
        if(ql<=l and r<=qr){
            lazy[idx]+=x;
            return;
        }
        int mid=l+r>>1;
        if(qr<=mid) upd(idx<<1,l,mid,ql,qr,x);
        else if(ql>mid) upd(idx<<1|1,mid+1,r,ql,qr,x);
        else upd(idx<<1,l,mid,ql,qr,x),upd(idx<<1|1,mid+1,r,ql,qr,x);
        pushdown(idx<<1,l,mid),pushdown(idx<<1|1,mid+1,r);
        seg[idx]=(seg[idx<<1]+seg[idx<<1|1]);
    }
    inline ll query(int idx,int l,int r,int ql,int qr){
        pushdown(idx,l,r);
        if(ql<=l and r<=qr) return seg[idx];
        int mid=l+r>>1;
        if(qr<=mid) return query(idx<<1,l,mid,ql,qr);
        else if(ql>mid) return query(idx<<1|1,mid+1,r,ql,qr);
        return query(idx<<1,l,mid,ql,qr)+query(idx<<1|1,mid+1,r,ql,qr);
    }
    inline ll query(int l,int r){
        if(l>r) return 0;
        return query(1,0,n-1,l,r);
    }
    inline void upd(int l,int r,ll x){
        if(l>r) return;
        upd(1,0,n-1,l,r,x);
    }
}rect,par;
int n,q;
int arr[maxn];
ll ans[maxn];
vector<pair<pii,int>> upd[maxn];
vector<pair<pii,int>> query[maxn];
inline void tri(int l,int r,int v){
    if(l>r) return;
    //parallelogram-rectangle
    par.upd(l+n,2*n+1,v);
    rect.upd(r+n+1,2*n+1,-v);
    //place where xiao and da intersect
    if((r-l+1)<=n) upd[r-l+1].pb({{l,r},v});
}
int l[maxn],r[maxn];
int main(){
    ios::sync_with_stdio(false),cin.tie(0);
    rect.resize(maxn),par.resize(maxn);
    n=readInt(),q=readInt();
    REP(i,n) arr[i]=readInt();
    vector<int> v;
    REP(i,n){
        while(sz(v) and arr[v.back()]<arr[i]) v.pop_back();
        if(sz(v)) l[i]=v.back();
        else l[i]=-n-1;
        v.pb(i);
    }
    v.clear();
    for(int i=n-1;i>=0;i--){
        while(sz(v) and arr[v.back()]<=arr[i]) v.pop_back();
        if(sz(v)) r[i]=v.back();
        else r[i]=n+1;
        v.pb(i);
    }
    REP(i,n){
        tri(l[i]+1,r[i]-1,arr[i]);
        tri(l[i]+1,i-1,-arr[i]);
        tri(i+1,r[i]-1,-arr[i]);
    }
    REP(i,q){
        int t=readInt(),l=readInt(),r=readInt();
        --l,--r;
        query[t].pb({{l,r},i});
    }
    REP1(i,n){
        for(auto x:upd[i]){
            int l=x.f.f,r=x.f.s,v=x.s;
            par.upd(l+n,2*n+1,-v);
            rect.upd(r+n+1,2*n+1,v);
        }
        for(auto x:query[i]){
            int l=x.f.f,r=x.f.s;
            ans[x.s]=par.query(l-i+n,r-i+n)+rect.query(l+n,r+n);
        }
    }
    REP(i,q) writeInt(ans[i],'\n');
}

Compilation message (stderr)

ho_t5.cpp: In member function 'void segt::upd(int, int, int, int, int, ll)':
ho_t5.cpp:169:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  169 |         int mid=l+r>>1;
      |                 ~^~
ho_t5.cpp: In member function 'll segt::query(int, int, int, int, int)':
ho_t5.cpp:179:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  179 |         int mid=l+r>>1;
      |                 ~^~

• Subtask 1: 1 / 1
• Subtask 2: 0 / 6
• Subtask 3: 7 / 7
• Subtask 4: 6 / 6
• Subtask 5: 0 / 80