Submission #917108

#	Time	Username	Problem	Language	Result	Execution time	Memory
917108		script_kidd	Monkey and Apple-trees (IZhO12_apple)	C++17	100 / 100	354 ms	205988 KiB

apple

//#pragma GCC optimize("O3,Ofast,unroll-loops")
//#pragma GCC target("avx2")

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
//#define int long long
//#define double long double
//const int INF=2e18;
//#define ll long long
//const int INF=2e9;

using namespace std;
using namespace __gnu_pbds;
using pii=pair<int, int>;
using vi=vector<int>;
using vvi=vector<vector<int>>;


#define FOR(x,n) for(int x=0; x<n; x++)
#define FOR1(x,n) for(int x=1; x<=n; x++)
#define REV(x,n) for(int x=n; x-->0;)
#define REV1(x,n) for(int x=n; x>0; i--)

#define SZ(X) (int)(X.size())
#define pb push_back
#define lb lower_bound
#define mp make_pair
#define all(v) begin(v), end(v)
#define UNTIE_IO ios_base::sync_with_stdio(0);cin.tie(0);

const int MOD=998244353;
const int SIZE=1e9;


int Q;

void setIO(string s) {
	freopen((s + ".in").c_str(), "r", stdin);
	freopen((s + ".out").c_str(), "w", stdout);
}

struct Seg {
    int l, r, m, sz, val, lz;
    Seg* ch[2];
    Seg (int _l, int _r): l(_l), r(_r), m((l+r)>>1), sz(r-l+1), val(0), lz(0){
        ch[0] = ch[1] = nullptr;
    }

    void pull(){
        val = ch[0]->val + ch[1]->val;
    }

    void give(int t){
        if (t){
            lz = t;      // Update tag
            val = t*sz;  // Update value
        }
    }

    void push(){
        if (!ch[0]) ch[0] = new Seg(l, m);
        ch[0]->give(lz);

        if (!ch[1]) ch[1] = new Seg(m+1, r);
        ch[1]->give(lz);

        lz = 0;
    }

    void upd(int ql, int qr, int x){
        if (ql <= l && r <= qr){
            give(x);
            return;
        }
        push();
        if (ql<=m) ch[0]->upd(ql, qr, x);
        if (m<qr) ch[1]->upd(ql, qr, x);
        pull();
    }

    int qry(int ql, int qr){
        if (ql <= l && r <= qr){
            return val;
        }
        push();
        int res = 0;
        if (ql<=m) res += ch[0]->qry(ql, qr);
        if (m<qr) res += ch[1]->qry(ql, qr);
        return res;
    }

};


signed main(){
    UNTIE_IO;

    Seg rt(1, SIZE);
    int C = 0;
    cin>>Q;
    while (Q--){
        int t,l,r;
        cin>>t>>l>>r;
        if (t==1){
            auto res = rt.qry(l+C, r+C);
            cout << res << '\n';
            C = res;
        }
        else {
            rt.upd(l+C, r+C, 1);
        }
    }
}

Compilation message (stderr)

apple.cpp: In function 'void setIO(std::string)':
apple.cpp:38:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |  freopen((s + ".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
apple.cpp:39:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |  freopen((s + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100