oj.uz

Submission #242882

# Submission time Handle Problem Language Result Execution time Memory
242882 2020-06-29T16:03:26 Z Atalasion Selling RNA Strands (JOI16_selling_rna) C++14
100 / 100
 640 ms 40472 KB 
//khodaya khodet komak kon
#include <bits/stdc++.h>

#define F first
#define S second
#define pb push_back
#define all(x) x.begin(), x.end()
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
#define SZ(x) (int)x.size()
//5:20

using namespace std;

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

const int N = 100000 + 10;
const ll MOD = 1000000000 + 7;
const ll INF = 1000000010;
const ll LOG = 25;

int n, m, ans[N], a[N], b[N], koj[N], fen[N];
string S[N], R[N];
pair<string, int> suf[N], pre[N];
vector<pii> QQ[N];

int LCP(int id, string s){
	for(int i = 0; i < min(SZ(s), SZ(S[id])); i++){
		if (s[i] != S[id][i]) return i;
	}
	return min(SZ(s), SZ(S[id]));
}

bool com(int id, string s){
	for (int i = 0; i < min(SZ(s), SZ(S[id])); i++){
		if (S[id][i] < s[i]) return 1;
		if (S[id][i] > s[i]) return 0;
	}
	return (SZ(S[id]) < SZ(s));
}

int LCP2(int id, string s){
	for(int i = 0; i < min(SZ(s), SZ(R[id])); i++){
		if (s[i] != R[id][i]) return i;
	}
	return min(SZ(s), SZ(R[id]));
}


bool com2(int id, string s){
	for (int i = 0; i < min(SZ(s), SZ(R[id])); i++){
		if (R[id][i] < s[i]) return 1;
		if (R[id][i] > s[i]) return 0;
	}
	return (SZ(R[id]) < SZ(s));
}

vector<pair<pair<pii, pii>, int>> Q;

inline void add(int id, int x){
	for (; id < N; id += id & (-id)) fen[id] += x;
	return;
}

int get(int id){
	int res = 0;
	for (; id > 0; id -= id & (-id)) res += fen[id];
	return res;
}

int32_t main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; i++){
		cin >> S[i];
		R[i] = S[i];
		pre[i] = {S[i], i};
		reverse(all(R[i]));
		suf[i] = {R[i], i};
	}
	sort(suf + 1, suf + n + 1);
	sort(pre + 1, pre + n + 1);
	for (int tmp = 1; tmp <= m; tmp++){
		string s, p;
		cin >> s >> p;
//		cout << "YES" << endl;
		reverse(all(p));
		int l = 0, r = n + 1;
		while (r - l > 1){
//			cout << l << ' ' << r << endl;
			int md = (l + r) >> 1;
			if (com(pre[md].S, s)) l = md;
			else r = md;
		}
		l++;
		if (LCP(pre[l].S, s) != s.size()) continue;
		int L = l, R = n + 1;
//		cout << "YES" << endl;
		while (R - L > 1){
			int md = (L + R) >> 1;
			if (LCP(pre[md].S, s) == s.size()) L = md;
			else R = md;
		}
		r = L;
		int ll = l, rr = r;
		l = 0, r = n + 1;
		while (r - l > 1){
			int md = (l + r) >> 1;
			if (com2(suf[md].S, p)) l = md;
			else r = md; 
		}
		l++;
		if (LCP2(suf[l].S, p) != p.size()) continue;
		L = l, R = n + 1;
		while (R - L > 1){
			int md = (L + R) >> 1;
			if (LCP2(suf[md].S, p) == p.size()) L = md;
			else R = md;
		}
		r = L;
		Q.pb({{{ll, rr}, {l, r}}, tmp});
//		cout << tmp << ' ' << ll << ' ' << rr << ' ' << l << ' ' << r << '\n';
	}
	for (int i = 1; i <= n; i++){
		a[i] = pre[i].S;
	}
	for (int i = 1; i <= n; i++){
		b[i] = suf[i].S;
		koj[b[i]] = i;
	}
	for (auto u:Q){
		QQ[u.F.F.S].pb({u.F.S.S, u.S});
		QQ[u.F.F.S].pb({u.F.S.F - 1, -u.S});
		QQ[u.F.F.F - 1].pb({u.F.S.F - 1, u.S});
		QQ[u.F.F.F - 1].pb({u.F.S.S, -u.S});
	}
	for (int i = 1; i <= n; i++){
		add(koj[a[i]], 1);
		for (auto u:QQ[i]){
			int x = get(u.F);
//			cout << i << ' ' << u.F << ' ' << u.S << ' ' << x << '\n';	
			if (u.S < 0) ans[-u.S] -= x;
			else ans[u.S] += x;
		}
	}
	for (int i = 1; i <= m; i++) cout << ans[i] << '\n';
	return 0;
}

Compilation message

selling_rna.cpp: In function 'int32_t main()':
selling_rna.cpp:97:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (LCP(pre[l].S, s) != s.size()) continue;
       ~~~~~~~~~~~~~~~~~^~~~~~~~~~~
selling_rna.cpp:102:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (LCP(pre[md].S, s) == s.size()) L = md;
        ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
selling_rna.cpp:114:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (LCP2(suf[l].S, p) != p.size()) continue;
       ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
selling_rna.cpp:118:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (LCP2(suf[md].S, p) == p.size()) L = md;
        ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 16768 KB Output is correct
2 Correct 14 ms 16768 KB Output is correct
3 Correct 14 ms 16768 KB Output is correct
4 Correct 14 ms 16768 KB Output is correct
5 Correct 14 ms 16896 KB Output is correct
6 Correct 14 ms 16896 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 25720 KB Output is correct
2 Correct 104 ms 29400 KB Output is correct
3 Correct 79 ms 29268 KB Output is correct
4 Correct 92 ms 29400 KB Output is correct
5 Correct 67 ms 24984 KB Output is correct
6 Correct 67 ms 25048 KB Output is correct
7 Correct 102 ms 28636 KB Output is correct
8 Correct 124 ms 31316 KB Output is correct
9 Correct 125 ms 31320 KB Output is correct
10 Correct 83 ms 29016 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 22248 KB Output is correct
2 Correct 84 ms 20080 KB Output is correct
3 Correct 106 ms 21588 KB Output is correct
4 Correct 85 ms 20328 KB Output is correct
5 Correct 83 ms 19952 KB Output is correct
6 Correct 106 ms 20584 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 16768 KB Output is correct
2 Correct 14 ms 16768 KB Output is correct
3 Correct 14 ms 16768 KB Output is correct
4 Correct 14 ms 16768 KB Output is correct
5 Correct 14 ms 16896 KB Output is correct
6 Correct 14 ms 16896 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct
8 Correct 65 ms 25720 KB Output is correct
9 Correct 104 ms 29400 KB Output is correct
10 Correct 79 ms 29268 KB Output is correct
11 Correct 92 ms 29400 KB Output is correct
12 Correct 67 ms 24984 KB Output is correct
13 Correct 67 ms 25048 KB Output is correct
14 Correct 102 ms 28636 KB Output is correct
15 Correct 124 ms 31316 KB Output is correct
16 Correct 125 ms 31320 KB Output is correct
17 Correct 83 ms 29016 KB Output is correct
18 Correct 124 ms 22248 KB Output is correct
19 Correct 84 ms 20080 KB Output is correct
20 Correct 106 ms 21588 KB Output is correct
21 Correct 85 ms 20328 KB Output is correct
22 Correct 83 ms 19952 KB Output is correct
23 Correct 106 ms 20584 KB Output is correct
24 Correct 163 ms 31008 KB Output is correct
25 Correct 234 ms 33428 KB Output is correct
26 Correct 124 ms 30132 KB Output is correct
27 Correct 158 ms 30704 KB Output is correct
28 Correct 640 ms 40472 KB Output is correct
29 Correct 402 ms 28260 KB Output is correct