oj.uz

답안 #261604

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
261604 2020-08-11T22:20:36 Z shayan_p 수확 (JOI20_harvest) C++14
100 / 100
 704 ms 113804 KB 
// And you curse yourself for things you never done

#include<bits/stdc++.h>

#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)
#define UB(v, x) (upper_bound(v.begin(), v.end(), x) - v.begin())
#define LB(v, x) (lower_bound(v.begin(), v.end(), x) - v.begin())
#define norm(x, m) ((((x) % (m)) + (m)) % (m))

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

const int maxn = 4e5 + 10, mod = 1e9 + 7, inf = 1e9 + 10;

struct fenwick{
    ll fn[maxn], TOT; // over flow nakone!
    vector<int> done;
    void add(int pos, ll x){
	TOT+= x;
	for(pos+= 3; pos < maxn; pos+= (pos & -pos))
	    done.PB(pos), fn[pos]+= x;
    }
    ll ask(int pos){
	ll ans = 0;
	for(pos+= 3; pos > 0; pos-= (pos & -pos))
	    ans+= fn[pos];
	return ans;
    }
    ll askG(int pos){
	return TOT - ask(pos-1);
    }
    void restart(){
	TOT = 0;
	while(sz(done)){
	    fn[done.back()] = 0;
	    done.pop_back();
	}
    }
};// restart ham bayad dashte bashe
fenwick fen, fen2;

int a[maxn], b[maxn], f[maxn], fl[maxn], n;

int mark[maxn];
vector< pair<int, ll> > qur[maxn];
ll ans[maxn];
vector<int> v[maxn];

int ROOT;
ll dis[maxn];
vector<ll> arr;
void prep(int u){
    if(u >= n)
	arr.PB(dis[u]);
    for(int y : v[u])
	if(y != ROOT)
	    dis[y] = dis[u] + fl[y], prep(y);
}
void dfs(int u){    
    if(u >= n)
	fen.add(LB(arr, dis[u]), 1);
    for(auto x : qur[u])
	ans[x.F]-= fen.ask(UB(arr, x.S + dis[u]) - 1);
    for(int y : v[u])
	if(y != ROOT)
	    dfs(y);
    for(auto x : qur[u])
	ans[x.F]+= fen.ask(UB(arr, x.S + dis[u]) - 1);
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie();

    int m, C, L;
    cin >> n >> m >> L >> C;
    for(int i = 0; i < n; i++)
	cin >> a[i];
    for(int i = 0; i < m; i++)
	cin >> b[i];
    {
	int pt = 0;
	while(pt < m && b[pt] < a[0])
	    f[n + pt] = n-1, fl[n + pt] = L-a[n-1]+b[pt], pt++;
	int pt2 = 0;
	while(pt < m){
	    while(pt2+1 < n && a[pt2 + 1] < b[pt])
		pt2++;
	    f[n + pt] = pt2;
	    fl[n + pt] = b[pt] - a[pt2];
	    pt++;
	}
    }
    {
	for(int i = 0; i < n; i++){
	    int pos = (((a[i] - C) % L) + L) % L;
	    int id = upper_bound(a, a+n, pos) - a;
	    f[i] = (id + n - 1) % n;
	    fl[i] = C + ((((pos - a[f[i]]) % L) + L) % L);
	}	
    }
    
    int q;
    cin >> q;
    for(int i = 0; i < q; i++){
	int u;
	cin >> u;
	ll T;
	cin >> T;
	--u;
	qur[u].PB({i, T});	
    }

    
    vector<int> roots;    
    for(int i = 0; i < n; i++){
	int tmp = i, tmpb = i;
	while(mark[tmp] == 0)
	    mark[tmp] = i+1, tmpb = tmp, tmp = f[tmp];
	if(mark[tmp] == i+1){
	    roots.PB(tmpb);
	}
    }

    for(int i = 0; i < n + m; i++){
	v[f[i]].PB(i);
    }
    for(int u : roots){
	ROOT = u;
	
	fen.restart();
	arr.clear();
	prep(u);
	
	sort(arr.begin(), arr.end());
	vector< pair<ll, int> >arr2;
	for(ll x : arr){
	    if(arr2.empty() || arr2.back().F != x)
		arr2.PB({x, 1});
	    else
		arr2[sz(arr2)-1].S++;
	}
	arr.clear();
	for(auto x : arr2){
	    arr.PB(x.F);
	}
	
	dfs(u);
	int tmp = u;
	ll cyc = 0;

	vector< pair<int, pair<ll, pair<int, ll> > > > tdo;
	
	do{
	    cyc+= fl[tmp];
	    tmp = f[tmp];
	    for(auto x : qur[tmp]){
		tdo.PB( { UB(arr, x.S - cyc), {cyc, x} } );
	    }
	}while(tmp != u);
	
	sort(tdo.begin(), tdo.end());

	fen2.restart();
	vector<ll> arr3;
	for(ll x : arr){
	    arr3.PB(x % cyc);
	}
	sort(arr3.begin(), arr3.end());
	arr3.resize( unique(arr3.begin(), arr3.end()) - arr3.begin() );
	int nw = 0;
	ll cnt = 0, cnt2 = 0;
	for(auto it : tdo){
	    while(nw < it.F){
		fen2.add( LB(arr3, arr[nw] % cyc), arr2[nw].S );
		cnt+= arr2[nw].S;
		cnt2+= 1ll * arr2[nw].S * (arr[nw] / cyc);
		nw++;
	    }
	    auto [id, T] = it.S.S;
	    
	    ll lz = it.S.F;
	    
	    ans[id]+= (1 + T/cyc) * cnt;
	    
	    ans[id]-= cnt2 + 1ll * cnt * (lz / cyc) + fen2.askG( LB(arr3, ((-lz) % cyc) + cyc) );

	    ll L = (T % cyc) + 1, R = cyc-1;

	    if(L <= R){
		L = norm(L - lz, cyc), R = norm(R - lz, cyc);
		
		if(L <= R)
		    ans[id]-= fen2.askG(LB(arr3, L)) - fen2.askG(UB(arr3, R));
		else
		    ans[id]-= fen2.askG(LB(arr3, L)) + fen2.ask(UB(arr3, R) - 1);

	    }
	}

	/*
ll lz = 0;
	do{
	    lz+= fl[tmp];
	    tmp = f[tmp];
	    for(auto x : qur[tmp]){
		for(auto y : arr2){
		    if(x.S >= y.F + lz)
			ans[x.F]+= 1ll * y.S * (((x.S - y.F - lz) / cyc) + 1);
		}
	    }
	    }while(tmp != u);*/
	
    }
    for(int i = 0; i < q; i++){
	cout << ans[i] << "\n";
    }
    return 0;
}

Compilation message

harvest.cpp: In function 'int main()':
harvest.cpp:185:11: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
      auto [id, T] = it.S.S;
           ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19712 KB Output is correct
2 Correct 18 ms 19712 KB Output is correct
3 Correct 19 ms 20476 KB Output is correct
4 Correct 18 ms 20096 KB Output is correct
5 Correct 18 ms 20480 KB Output is correct
6 Correct 18 ms 20544 KB Output is correct
7 Correct 18 ms 20480 KB Output is correct
8 Correct 17 ms 20072 KB Output is correct
9 Correct 17 ms 20096 KB Output is correct
10 Correct 18 ms 20096 KB Output is correct
11 Correct 18 ms 20224 KB Output is correct
12 Correct 19 ms 20544 KB Output is correct
13 Correct 20 ms 20928 KB Output is correct
14 Correct 19 ms 20352 KB Output is correct
15 Correct 18 ms 20352 KB Output is correct
16 Correct 18 ms 20352 KB Output is correct
17 Correct 18 ms 20352 KB Output is correct
18 Correct 18 ms 20224 KB Output is correct
19 Correct 19 ms 20352 KB Output is correct
20 Correct 18 ms 20224 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 177 ms 40628 KB Output is correct
2 Correct 272 ms 43280 KB Output is correct
3 Correct 277 ms 43756 KB Output is correct
4 Correct 248 ms 53732 KB Output is correct
5 Correct 279 ms 70468 KB Output is correct
6 Correct 273 ms 70516 KB Output is correct
7 Correct 233 ms 39656 KB Output is correct
8 Correct 233 ms 39916 KB Output is correct
9 Correct 397 ms 77860 KB Output is correct
10 Correct 250 ms 79448 KB Output is correct
11 Correct 532 ms 77856 KB Output is correct
12 Correct 513 ms 77860 KB Output is correct
13 Correct 513 ms 77740 KB Output is correct
14 Correct 351 ms 79332 KB Output is correct
15 Correct 359 ms 66832 KB Output is correct
16 Correct 290 ms 57844 KB Output is correct
17 Correct 268 ms 58048 KB Output is correct
18 Correct 168 ms 37520 KB Output is correct
19 Correct 172 ms 37556 KB Output is correct
20 Correct 217 ms 43176 KB Output is correct

Subtask #3
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19712 KB Output is correct
2 Correct 18 ms 19712 KB Output is correct
3 Correct 19 ms 20476 KB Output is correct
4 Correct 18 ms 20096 KB Output is correct
5 Correct 18 ms 20480 KB Output is correct
6 Correct 18 ms 20544 KB Output is correct
7 Correct 18 ms 20480 KB Output is correct
8 Correct 17 ms 20072 KB Output is correct
9 Correct 17 ms 20096 KB Output is correct
10 Correct 18 ms 20096 KB Output is correct
11 Correct 18 ms 20224 KB Output is correct
12 Correct 19 ms 20544 KB Output is correct
13 Correct 20 ms 20928 KB Output is correct
14 Correct 19 ms 20352 KB Output is correct
15 Correct 18 ms 20352 KB Output is correct
16 Correct 18 ms 20352 KB Output is correct
17 Correct 18 ms 20352 KB Output is correct
18 Correct 18 ms 20224 KB Output is correct
19 Correct 19 ms 20352 KB Output is correct
20 Correct 18 ms 20224 KB Output is correct
21 Correct 177 ms 40628 KB Output is correct
22 Correct 272 ms 43280 KB Output is correct
23 Correct 277 ms 43756 KB Output is correct
24 Correct 248 ms 53732 KB Output is correct
25 Correct 279 ms 70468 KB Output is correct
26 Correct 273 ms 70516 KB Output is correct
27 Correct 233 ms 39656 KB Output is correct
28 Correct 233 ms 39916 KB Output is correct
29 Correct 397 ms 77860 KB Output is correct
30 Correct 250 ms 79448 KB Output is correct
31 Correct 532 ms 77856 KB Output is correct
32 Correct 513 ms 77860 KB Output is correct
33 Correct 513 ms 77740 KB Output is correct
34 Correct 351 ms 79332 KB Output is correct
35 Correct 359 ms 66832 KB Output is correct
36 Correct 290 ms 57844 KB Output is correct
37 Correct 268 ms 58048 KB Output is correct
38 Correct 168 ms 37520 KB Output is correct
39 Correct 172 ms 37556 KB Output is correct
40 Correct 217 ms 43176 KB Output is correct
41 Correct 408 ms 64972 KB Output is correct
42 Correct 351 ms 47212 KB Output is correct
43 Correct 215 ms 52064 KB Output is correct
44 Correct 395 ms 74968 KB Output is correct
45 Correct 374 ms 90668 KB Output is correct
46 Correct 402 ms 91440 KB Output is correct
47 Correct 411 ms 92148 KB Output is correct
48 Correct 384 ms 93296 KB Output is correct
49 Correct 397 ms 93388 KB Output is correct
50 Correct 378 ms 64716 KB Output is correct
51 Correct 368 ms 79696 KB Output is correct
52 Correct 571 ms 113344 KB Output is correct
53 Correct 525 ms 113804 KB Output is correct
54 Correct 581 ms 113568 KB Output is correct
55 Correct 704 ms 99904 KB Output is correct
56 Correct 476 ms 94076 KB Output is correct
57 Correct 411 ms 79056 KB Output is correct
58 Correct 450 ms 95700 KB Output is correct
59 Correct 383 ms 80512 KB Output is correct
60 Correct 388 ms 80656 KB Output is correct
61 Correct 410 ms 80852 KB Output is correct
62 Correct 538 ms 87748 KB Output is correct
63 Correct 330 ms 74460 KB Output is correct
64 Correct 308 ms 74580 KB Output is correct
65 Correct 309 ms 74840 KB Output is correct
66 Correct 302 ms 75280 KB Output is correct
67 Correct 271 ms 59604 KB Output is correct
68 Correct 301 ms 75228 KB Output is correct
69 Correct 397 ms 83404 KB Output is correct
70 Correct 341 ms 63948 KB Output is correct
71 Correct 386 ms 81100 KB Output is correct
72 Correct 389 ms 81104 KB Output is correct