답안 #569398

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
569398 2022-05-27T11:17:11 Z inksamurai 푸드 코트 (JOI21_foodcourt) C++17
13 / 100
758 ms 58556 KB
#include <bits/stdc++.h>
// cut here
#ifdef _MSC_VER
#include <intrin.h>
#endif
 
namespace atcoder {
 
namespace internal {
 
int ceil_pow2(int n) {
    int x = 0;
    while ((1U << x) < (unsigned int)(n)) x++;
    return x;
}
 
int bsf(unsigned int n) {
#ifdef _MSC_VER
    unsigned long index;
    _BitScanForward(&index, n);
    return index;
#else
    return __builtin_ctz(n);
#endif
}
 
}  // namespace internal
 
}  // namespace atcoder
 
 
namespace atcoder {
 
template <class S, S (*op)(S, S), S (*e)()> struct segtree {
  public:
    segtree() : segtree(0) {}
    segtree(int n) : segtree(std::vector<S>(n, e())) {}
    segtree(const std::vector<S>& v) : _n(int(v.size())) {
        log = internal::ceil_pow2(_n);
        size = 1 << log;
        d = std::vector<S>(2 * size, e());
        for (int i = 0; i < _n; i++) d[size + i] = v[i];
        for (int i = size - 1; i >= 1; i--) {
            update(i);
        }
    }
 
    void set(int p, S x) {
        assert(0 <= p && p < _n);
        p += size;
        d[p] = x;
        for (int i = 1; i <= log; i++) update(p >> i);
    }
 
    S get(int p) {
        assert(0 <= p && p < _n);
        return d[p + size];
    }
 
    S prod(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        S sml = e(), smr = e();
        l += size;
        r += size;
 
        while (l < r) {
            if (l & 1) sml = op(sml, d[l++]);
            if (r & 1) smr = op(d[--r], smr);
            l >>= 1;
            r >>= 1;
        }
        return op(sml, smr);
    }
 
    S all_prod() { return d[1]; }
 
    template <bool (*f)(S)> int max_right(int l) {
        return max_right(l, [](S x) { return f(x); });
    }
    template <class F> int max_right(int l, F f) {
        assert(0 <= l && l <= _n);
        assert(f(e()));
        if (l == _n) return _n;
        l += size;
        S sm = e();
        do {
            while (l % 2 == 0) l >>= 1;
            if (!f(op(sm, d[l]))) {
                while (l < size) {
                    l = (2 * l);
                    if (f(op(sm, d[l]))) {
                        sm = op(sm, d[l]);
                        l++;
                    }
                }
                return l - size;
            }
            sm = op(sm, d[l]);
            l++;
        } while ((l & -l) != l);
        return _n;
    }
 
    template <bool (*f)(S)> int min_left(int r) {
        return min_left(r, [](S x) { return f(x); });
    }
    template <class F> int min_left(int r, F f) {
        assert(0 <= r && r <= _n);
        assert(f(e()));
        if (r == 0) return 0;
        r += size;
        S sm = e();
        do {
            r--;
            while (r > 1 && (r % 2)) r >>= 1;
            if (!f(op(d[r], sm))) {
                while (r < size) {
                    r = (2 * r + 1);
                    if (f(op(d[r], sm))) {
                        sm = op(d[r], sm);
                        r--;
                    }
                }
                return r + 1 - size;
            }
            sm = op(d[r], sm);
        } while ((r & -r) != r);
        return 0;
    }
 
  private:
    int _n, size, log;
    std::vector<S> d;
 
    void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
};
 
}  // namespace atcoder
// cut here 
#define int long long
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,x,n) for(int i=x;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3z2QF2y ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

struct lazy_segtree{
	int n;
	vec(ll) seg,lazy,flag;
	lazy_segtree(int m){
		init(m);
	}
	void init(int m){
		n=1;
		while(n<m) n*=2;
		seg.clear();
		lazy.clear();
		flag.clear();
		seg.resize(2*n,0);
		lazy.resize(2*n,0);
		flag.resize(2*n,false);
	}
	void push(int l,int r,int node){
		if(flag[node]){
			seg[node]+=(ll)(r-l)*lazy[node];
			seg[node]=max(0ll,seg[node]);
			if(node<n){
				// lazy merge
				int m=(l+r)>>1;
				lazy[node*2]+=lazy[node];
				lazy[node*2+1]+=lazy[node];
				flag[node*2]=flag[node*2+1]=true;
			}
			flag[node]=false;
			lazy[node]=0;
		}
	}
	void set(int node,int l,int r,ll x,int _l,int _r){
		push(l,r,node);
		if(l>=_r or r<=_l) return;
		if(l>=_l and r<=_r){
			lazy[node]+=x;
			flag[node]=true;
			push(l,r,node);
			return;
		}
		int m=(l+r)>>1;
		set(node*2,l,m,x,_l,_r);
		set(node*2+1,m,r,x,_l,_r);
		// prod seg_node
		seg[node]=seg[node*2]+seg[node*2+1]; 
		seg[node]=max(0ll,seg[node]);
	}
	ll prod(int node,int l,int r,int _l,int _r){
		push(l,r,node);
		// _e() upper seg _
		if(l>=_r or r<=_l) return 0; 
		if(l>=_l and r<=_r) return seg[node];
		int m=(l+r)>>1;
		ll vl=prod(node*2,l,m,_l,_r);
		ll vr=prod(node*2+1,m,r,_l,_r);
		return vl+vr;
	}
	void set(int l,int r,int x){
		// [l,r)
		set(1,0,n,x,l,r);
	}
	ll prod(int l,int r){
		// [l,r)
		return prod(1,0,n,l,r);
	}
};

int op(int l,int r){return l+r;}
int e(){return 0;}

signed main(){
_3z2QF2y;
	int n,m,q;
	cin>>n>>m>>q;
	vi bel(q,-1),usd(q,0);
	vec(vec(tuple<int,int,int>)) adqry(n+1);
	vec(vec(pii)) qry(n+1);
	lazy_segtree laseg(n),laseg1(n);
	rep(i,q){
		int t;
		cin>>t;
		if(t==1){
			int l,r,k;
			cin>>l>>r>>bel[i]>>k;
			laseg.set(l-1,r,k);
			laseg1.set(l-1,r,k);
			adqry[l-1].emplace_back(i,k,1);
			if(r<n) adqry[r].emplace_back(i,k,-1);
		}else if(t==2){
			int l,r,k;
			cin>>l>>r>>k;
			laseg.set(l-1,r,-k);
		}else{
			int j,c;
			cin>>j>>c;
			j-=1;
			usd[i]=1;
			// T - (T - seg.prod(j,j+1)) - c >= 0
			qry[j].emplace_back(laseg1.prod(j,j+1)-laseg.prod(j,j+1)+c,i);
		}
	}
	vi pns(q);
	atcoder::segtree<int,op,e> seg(q);
	rep(i,n){
		for(auto &[j,k,t]:adqry[i]){
			// print(i,j,k);
			if(t==1){
				seg.set(j,k);
			}else{
				seg.set(j,0);
			}
		}
		for(auto &[b,j]:qry[i]){
			int l=0,r=q-1;
			int c=-1;
			while(l<=r){
				int m=(l+r)>>1;
				if(seg.prod(0,m+1)>=b){
					c=m,r=m-1;
				}else{
					l=m+1;
				}
			}
			// if(i==1) print(c,j);
			if(c!=-1 and c<=j){
				pns[j]=bel[c];
			}
		}
	}
	rep(i,q){
		if(!usd[i]) continue;
		cout<<pns[i]<<"\n";
	}
//
	return 0;
}

Compilation message

foodcourt.cpp: In member function 'void lazy_segtree::push(long long int, long long int, long long int)':
foodcourt.cpp:181:9: warning: unused variable 'm' [-Wunused-variable]
  181 |     int m=(l+r)>>1;
      |         ^
# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 105 ms 15748 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 758 ms 58556 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 179 ms 16432 KB Output is correct
2 Correct 203 ms 16612 KB Output is correct
3 Correct 170 ms 17268 KB Output is correct
4 Correct 152 ms 15028 KB Output is correct
5 Correct 162 ms 16160 KB Output is correct
6 Correct 180 ms 17328 KB Output is correct
7 Correct 47 ms 5760 KB Output is correct
8 Correct 44 ms 5408 KB Output is correct
9 Correct 127 ms 15800 KB Output is correct
10 Correct 108 ms 15268 KB Output is correct
11 Correct 183 ms 17192 KB Output is correct
12 Correct 164 ms 17148 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -