oj.uz

답안 #487278

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
487278 2021-11-15T02:39:10 Z kym Fancy Fence (CEOI20_fancyfence) C++14
100 / 100
 115 ms 23196 KB 
#include <bits/stdc++.h>
using namespace std;
#define int ll 
#define FOR(i,s,e) for(ll i = s; i <= (ll)e; ++i)
#define DEC(i,s,e) for(ll i = s; i >= (ll)e; --i)
#define IAMSPEED ios_base::sync_with_stdio(false); cin.tie(0);
#ifdef LOCAL
#define db(x) cerr << #x << "=" << x << "\n"
#define db2(x, y) cerr << #x << "=" << x << " , " << #y << "=" << y << "\n"
#define db3(a,b,c) cerr<<#a<<"="<<a<<","<<#b<<"="<<b<<","<<#c<<"="<<c<<"\n"
#define dbv(v) cerr << #v << ":"; for (auto ite : v) cerr << ite << ' '; cerr <<"\n"
#define dbvp(v) cerr << #v << ":"; for (auto ite : v) cerr << "{"  << ite.f << ',' << ite.s << "} "; cerr << "\n"
#define dba(a,ss,ee) cerr << #a << ":"; FOR(ite,ss,ee) cerr << a[ite] << ' '; cerr << "\n"
#define reach cerr << "LINE: " << __LINE__ << "\n";
#else
#define db(x)
#define db2(x,y)
#define db3(a,b,c)
#define dbv(v)
#define dbvp(v)
#define dba(a,ss,ee)
#define reach 
#endif
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define ll long long 
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define f first
#define s second
#define g0(x) get<0>(x)
#define g1(x) get<1>(x)
#define g2(x) get<2>(x)
#define g3(x) get<3>(x)
typedef pair <ll, ll> pi;
typedef tuple<ll,ll,ll> ti3;
typedef tuple<ll,ll,ll,ll> ti4;
ll rand(ll a, ll b) { return a + rng() % (b-a+1); }
const int MOD = 1e9 + 7;
const int inf = (int)1e9 + 500;
const long long oo = (ll)1e18 + 500;
template <typename T> void chmax(T& a, const T b) { a=max(a,b); }
template <typename T> void chmin(T& a, const T b) { a=min(a,b); }
const int MAXN = 100005;
int ans;
int H[MAXN], W[MAXN];
int sum[MAXN];
int n;

int rsq(int x, int y) { return (MOD+(sum[y] - sum[x-1])%MOD)%MOD; } 
struct SparseTable {
    vector<vector<int> > ST;
    int N, K;
    SparseTable(int _N, vector<int> a): N(_N) {
        K = MSB(N);
        ST.resize(K);
        ST[0] = a;
        for (int k = 1; k < K; ++k) 
            for (int i = 0; i+(1<<k) <= N; ++i) 
                ST[k].push_back( min(ST[k-1][i], ST[k-1][i+(1<<(k-1))]) ); //min
    }
    
    /* returns most significant bit of an integer */
    inline int MSB(unsigned int x) { return 32-__builtin_clz(x); }
    
    /* Min of range (x, x + 2^k-1) and (y-2^k+1, y) */
    int query(int x, int y) {
		--x;--y;
        int k = MSB(y-x+1) - 1;
        return min(ST[k][x], ST[k][y-(1<<k)+1]);
    }
    
};

int getseq(int st, int en) {
	db2(st,en);
	return (st+en)*(en-st+1)/2;
}

int32_t main() 
{
	IAMSPEED
	vector<int> v;
	cin >> n;
	FOR(i,1,n) cin >> H[i];
	FOR(i,1,n) v.pb(H[i]);
	SparseTable ST=SparseTable(n,v);
	FOR(i,1,n) cin >> W[i];
	FOR(i,1,n) sum[i]=sum[i-1]+W[i], sum[i]%=MOD;
	priority_queue<int> pq;
	set<int> in;
	H[n+1]=0;
	FOR(i,1,n+1) {
		if(in.find(H[i]) != in.end());
		else {
			pq.push(H[i]);
			in.insert(H[i]);
		}
		while(pq.size() && pq.top()>H[i]) {
			int x=pq.top();
			in.erase(pq.top());
			pq.pop();
			//in.erase(pq.top());
			int lo=0,hi=i;
			while(lo<hi-1) {
				int mid=(lo+hi)/2;
				if(ST.query(mid,i-1)>=x) {
					hi=mid;
				} else {
					lo=mid;
				}
			}
			db(hi);
			int sz=rsq(hi,i-1);
			db(sz);
			sz%=MOD;
			sz=sz*(sz+1)/2;
			sz%=MOD;
			db(sz);
			int dif=x;
			if(pq.size())dif=x-pq.top();
			db(getseq(x-dif+1,x));
			sz*=getseq(x-dif+1,x)%MOD;
			sz%=MOD;
			ans+=sz;
			ans%=MOD;
			db(ans);
		}
	
		db(pq.size());
	}
	cout << ans;
}

Subtask #1
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 460 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 18 ms 7884 KB Output is correct
4 Correct 37 ms 16220 KB Output is correct
5 Correct 40 ms 16296 KB Output is correct
6 Correct 34 ms 16268 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 3 ms 2000 KB Output is correct
3 Correct 18 ms 8824 KB Output is correct
4 Correct 37 ms 18224 KB Output is correct
5 Correct 40 ms 18288 KB Output is correct
6 Correct 1 ms 336 KB Output is correct

Subtask #5
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 4 ms 2000 KB Output is correct
4 Correct 18 ms 8888 KB Output is correct
5 Correct 37 ms 18232 KB Output is correct
6 Correct 39 ms 18264 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 8 ms 2380 KB Output is correct
9 Correct 28 ms 9728 KB Output is correct
10 Correct 95 ms 22984 KB Output is correct
11 Correct 115 ms 23152 KB Output is correct
12 Correct 0 ms 328 KB Output is correct

Subtask #6
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 0 ms 284 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 0 ms 208 KB Output is correct

Subtask #7
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 18 ms 8576 KB Output is correct
12 Correct 36 ms 17524 KB Output is correct
13 Correct 38 ms 17432 KB Output is correct
14 Correct 34 ms 17388 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 4 ms 1872 KB Output is correct
17 Correct 18 ms 8844 KB Output is correct
18 Correct 35 ms 18220 KB Output is correct
19 Correct 38 ms 18296 KB Output is correct
20 Correct 2 ms 464 KB Output is correct
21 Correct 7 ms 2384 KB Output is correct
22 Correct 33 ms 9788 KB Output is correct
23 Correct 93 ms 23020 KB Output is correct
24 Correct 98 ms 23196 KB Output is correct
25 Correct 0 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 1 ms 464 KB Output is correct
29 Correct 1 ms 464 KB Output is correct
30 Correct 6 ms 2000 KB Output is correct
31 Correct 6 ms 2000 KB Output is correct
32 Correct 29 ms 8756 KB Output is correct
33 Correct 32 ms 8900 KB Output is correct
34 Correct 64 ms 18032 KB Output is correct
35 Correct 60 ms 18080 KB Output is correct
36 Correct 66 ms 18156 KB Output is correct
37 Correct 66 ms 18172 KB Output is correct
38 Correct 0 ms 336 KB Output is correct
39 Correct 66 ms 18268 KB Output is correct
40 Correct 65 ms 18180 KB Output is correct
41 Correct 67 ms 18284 KB Output is correct
42 Correct 80 ms 20500 KB Output is correct