oj.uz

Submission #682516

# Submission time Handle Problem Language Result Execution time Memory
682516 2023-01-16T11:43:57 Z vjudge1 Fish (IOI08_fish) C++14
100 / 100
 813 ms 65536 KB 
#include <bits/stdc++.h>
//#include<ext/pb_ds/assoc_container.hpp>
//#include<ext/pb_ds/tree_policy.hpp>

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef unsigned int ui;

#define ii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vii vector<ii>
#define vll vector<ll>
#define vpll vector<pll>
#define matrix vector<vi>
#define matrixLL vector<vll>
#define vs vector<string>
#define vui vector<ui>
#define msi multiset<int>
#define mss multiset<string>
#define si set<int>
#define ss set<string>
#define PB push_back
#define PF push_front
#define PPB pop_back
#define PPF pop_front
#define X first
#define Y second
#define MP make_pair
#define FOR(i, a, b) for (int i = int(a); i < int(b); i++)
#define REP(i, n) FOR(i, 0, n)
#define all(x) (x).begin(), (x).end()

const int dx[] = {-1, 1, 0, 0};
const int dy[] = {0, 0, -1, 1};
const int dxx[] = {-1, 1, 0, 0, 1, 1, -1, -1};
const int dyy[] = {0, 0, -1, 1, -1, 1, -1, 1};
const string abc="abcdefghijklmnopqrstuvwxyz";
const string ABC="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const ld pi = 3.14159265;
int mod = 1e9 + 7;
const int MOD = 1e9 + 7;
const int MAXN = 1e6 + 7;
const int inf = mod;
const ll INF = 1e18;
const ll zero = ll(0);
const int logo = 19;
const int off = 1 << logo;
const int trsz = off << 1;

vii arr;
int gdid[MAXN], seg[trsz], pos[MAXN], kol[MAXN];

void update(int x, int val){
	x += off;
	seg[x] = (seg[x] + val + mod) % mod;
	for(x /= 2; x; x /= 2) seg[x] = ((ll)seg[x * 2] * (ll)seg[x * 2 + 1]) % mod;
}

ll query(int x, int lo, int hi, int a, int b){
	if(lo >= b or hi <= a) return 1;
	if(lo >= a and hi <= b) return seg[x];
	int mid = (lo + hi) / 2;
	return ((ll)query(x * 2, lo, mid, a, b) * (ll)query(x * 2 + 1, mid, hi, a, b)) % mod;
}

vi c;
vpll boje;
vi siz[MAXN];

void solve(){
	fill(seg, seg + trsz, 1);
	fill(gdid, gdid + MAXN - 1, -1);
	int n, k, m;
	cin >> n >> k >> mod;
	arr.resize(n);
	REP(i, n) cin >> arr[i].X >> arr[i].Y;
	sort(all(arr));
	
	for(int i = n - 1; i >= 0; i--){
		siz[arr[i].Y].PB(arr[i].X);
		if(gdid[arr[i].Y] == -1) gdid[arr[i].Y] = i, c.PB(arr[i].Y), boje.PB({arr[i].X, i});
	}
	reverse(all(c));
	for(int i=0; i<c.size(); i++) pos[c[i]] = i, reverse(all(siz[c[i]]));
	for(int i=0; i<n; i++) update(pos[arr[i].Y], 1); 
	sort(all(boje));
	boje.PB({INF, inf});
	
	int ans = 0;
	int R = n - 1;
	for(int i = n - 1; i >= 0; i--){
		while(R >= 0 and arr[R].X * 2 > arr[i].X) update(pos[arr[R].Y], -1), R--;
		if(gdid[arr[i].Y] != i) continue;
		
		if(i == n - 1){
			REP(i, k + 1) kol[i] = seg[i + off];
		}
		
		ans = (ans + query(1, 0, off, 0, pos[arr[i].Y] + 1)) % mod;
		
		int prv = *lower_bound(all(siz[arr[i].Y]), arr[i].X / 2 + 1);
		int poz = lower_bound(all(boje), MP((ll)prv * 2, (ll)-inf)) - boje.begin(); 
		
		if(pos[arr[i].Y] + 1 < poz){
			int val = ((ll)query(1, 0, off, 0, pos[arr[i].Y]) * (ll)(((ll)query(1, 0, off, pos[arr[i].Y] + 1, poz) - 1 + mod) % mod)) % mod;
			ans = (ans + val) % mod;
		}
		
	}
	cout << ans << "\n";
}


int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int t=1;
	//cin >> t;
	while(t--)solve();
	return 0;
}

Compilation message

fish.cpp: In function 'void solve()':
fish.cpp:88:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |  for(int i=0; i<c.size(); i++) pos[c[i]] = i, reverse(all(siz[c[i]]));
      |               ~^~~~~~~~~
fish.cpp:77:12: warning: unused variable 'm' [-Wunused-variable]
   77 |  int n, k, m;
      |            ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 31832 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 31840 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31836 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 31832 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31948 KB Output is correct
2 Correct 20 ms 31824 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 31844 KB Output is correct
2 Correct 264 ms 44472 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 31848 KB Output is correct

Subtask #8
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 31972 KB Output is correct

Subtask #9
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 118 ms 37220 KB Output is correct
2 Correct 155 ms 38592 KB Output is correct

Subtask #10
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 32008 KB Output is correct
2 Correct 19 ms 31956 KB Output is correct
3 Correct 22 ms 31976 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 175 ms 40304 KB Output is correct
2 Correct 284 ms 44928 KB Output is correct
3 Correct 306 ms 45368 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 44564 KB Output is correct
2 Correct 277 ms 45972 KB Output is correct

Subtask #13
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 178 ms 40524 KB Output is correct
2 Correct 285 ms 45704 KB Output is correct

Subtask #14
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 45016 KB Output is correct

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 306 ms 46996 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 44788 KB Output is correct
2 Correct 418 ms 51228 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 498 ms 51944 KB Output is correct
2 Correct 380 ms 48228 KB Output is correct

Subtask #18
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 373 ms 50820 KB Output is correct
2 Correct 447 ms 51088 KB Output is correct
3 Correct 440 ms 56328 KB Output is correct
4 Correct 444 ms 51008 KB Output is correct

Subtask #19
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 576 ms 55856 KB Output is correct
2 Correct 668 ms 65536 KB Output is correct
3 Correct 793 ms 65536 KB Output is correct
4 Correct 813 ms 65536 KB Output is correct