Submission #56685

#	Time	Username	Problem	Language	Result	Execution time	Memory
56685		Mamnoon_Siam	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	4 / 100	3056 ms	4688 KiB

fortune_telling2

//#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>
using namespace std;

#define debug(s) cout<< #s <<" = "<< s <<endl
#define all(v) (v).begin(), (v).end()
#define KeepUnique(v) (v).erase( unique(all(v)), v.end() )
#define MEMSET(a,val) memset(a, val, sizeof a)
#define PB push_back
#define endl '\n'
typedef long long ll;

inline int myrand(int l, int r) {
	int ret = rand(); ret <<= 15; ret ^= rand();
	if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
	return ret;
}
template <typename F, typename S>
ostream& operator << (ostream& os, const pair< F, S>& p) {
    return os<<"(" <<p.first<<", "<<p.second<<")"; }

typedef pair<int, int> ii;
template<typename T> using min_pq =
	priority_queue<T, vector<T>, greater<T> >;

//int dx[] = {-1, +0, +1, +0};
//int dy[] = {+0, +1, +0, -1};

const int maxn = 200010;
const int inf = 2e9;

struct MaxSegTree {
	vector<int> t;
	MaxSegTree() {}
	MaxSegTree(int N) {t.assign(N << 1, -inf);}
	void update(int p, int val) {
		p += (t.size() >> 1);
		t[p] = max(t[p], val);
		for(; p > 1; p >>= 1) t[p >> 1] = max(t[p], t[p ^ 1]);
	}
	int query(int l, int r) {
		r++;
		int ret = inf;
		for(l += (t.size() >> 1), r += (t.size() >> 1); l < r; l >>= 1, r >>= 1) {
			if(l & 1) ret = max(ret, t[l++]);
			if(r & 1) ret = max(ret, t[--r]);
		} return ret;
	}
};

int n, q;
vector<int> A, B, T;
vector<int> mp;
int flag[maxn];

int32_t main () {
	// freopen("in", "r", stdin);
	cin >> n >> q;
	A.resize(n), B.resize(n), T.resize(q);
	for(int i = 0; i < n; i++) {
		cin >> A[i] >> B[i];
		if(A[i] > B[i]) swap(A[i], B[i]), flag[i] = 1;
	}
	for(int &b : T) cin >> b;
	for(int i = 0; i < n; i++) {
		mp.push_back(A[i]);
		mp.push_back(B[i]);
	}
	for(int b : T) mp.push_back(b);
	sort(all(mp));
	KeepUnique(mp);
	for(int i = 0; i < n; i++) {
		A[i] = lower_bound(all(mp), A[i]) - mp.begin();
		B[i] = lower_bound(all(mp), B[i]) - mp.begin();
	}
	for(int &b : T) {
		b = lower_bound(all(mp), b) - mp.begin();
	}
	MaxSegTree ds(mp.size() + 10);
	for(int i = 0; i < q; i++) {
		ds.update(T[i], i);
	}
	ll ans = 0;
	for(int i = 0; i < n; i++) {
		if(A[i] == B[i]) {
			ans += mp[A[i]];
			continue;
		}
		int it = -1;
		for(int j = 0; j < q; j++) {
			if(A[i] <= T[j] and  T[j] < B[i])
				it = j;
		} it++;
		int now;
		if(it == 0) {
			if(flag[i]) now = B[i];
			else now = A[i];
		} else {
			now = B[i];
		}
		int tog = 0;
		for(int j = it; j < T.size(); j++) {
			if(T[j] >= B[i]) tog++;
		}
		if(tog & 1) now ^= A[i] ^ B[i];
		ans += mp[now];
	} cout << ans << endl;
}

Compilation message (stderr)

fortune_telling2.cpp: In function 'int myrand(int, int)':
fortune_telling2.cpp:17:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
  ^~
fortune_telling2.cpp:17:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
                          ^~~
fortune_telling2.cpp: In function 'int32_t main()':
fortune_telling2.cpp:104:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = it; j < T.size(); j++) {
                   ~~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 31
• Subtask 3: 0 / 65