oj.uz

Submission #777089

# Submission time Handle Problem Language Result Execution time Memory
777089 2023-07-08T16:08:01 Z salmon Fish (IOI08_fish) C++14
90 / 100
 576 ms 65536 KB 
#include <bits/stdc++.h>
using namespace std;
int N,M;
int mod;
int l,h;
vector<pair<int,int>> v;
vector<pair<int,int>> oh;
int mepu[500100];
bool usable[500100];
int mapping[500100];
bool o[500100];
int iv[500100];

struct node{
	int s,e,m;
	long long int v;
	node *l,*r;

	node(int S, int E){
		s = S;
		e = E;
		m = (s + e)/2;

		v = 1;

		if(s != e){
			l = new node(s,m);
			r = new node(m + 1, e);
		}
	}

	void update(int i, int k){
		if(s == e){
			v += k;
			v %= mod;
			return;
		}

		if(i <= m){
			l -> update(i,k);
		}
		else{
			r -> update(i,k);
		}

		v = (l -> v * r -> v) % mod;
	}

	long long int query(int S, int E){
		if(E < S) return 1;

		if(S <= s && e <= E){
			return v;
		}

		long long int V = 1;

		if(S <= m){
			V *= l -> query(S,E);
		}
		if(m < E){
			V *= r -> query(S,E);
		}

		return V % mod;
	}

}*root,*lroot;



int main(){
	scanf(" %d",&N);
	scanf(" %d",&M);

	scanf(" %d",&mod);

	int next[500100];

	for(int i = 1; i <= M; i++){
		mepu[i] = -1;
		next[i] = -1;
	}

	for(int i = 0; i <= M; i++) usable[i] = false;

	for(int i = 0; i < N; i++){
		scanf(" %d",&l);
		scanf(" %d",&h);

		v.push_back(make_pair(l,h));
	}

	sort(v.begin(),v.end(),greater<pair<int,int>>());

	for(int i = 0; i <= M; i++){
		o[i] = true;
	}

	for(int i = 0; i < v.size(); i++){
		if(o[v[i].second]){
			oh.push_back(v[i]);
			o[v[i].second] = false;
			iv[v[i].second] = v[i].first;
		}
		else if(v[i].first * 2 > iv[v[i].second]){
			next[v[i].second] = v[i].first;
		}
	}

	root = new node(0,M);
	lroot = new node(0,M);

	int it = 0;
	int it1 = 0;

	reverse(oh.begin(),oh.end());

	for(int i = 0; i < oh.size(); i++){
		mapping[oh[i].second] = i;
	}

	reverse(oh.begin(),oh.end());

	reverse(v.begin(),v.end());

	long long int bigans = 0;

	for(int i = 0; i < N; i++){
		while(it != N && v[i].first >= v[it].first * 2){
			lroot -> update(mapping[v[it].second], 1);
			if(usable[v[it].second]){
				root -> update(mapping[v[it].second],1);
				it++;
			}
			else{
				if(mepu[v[it].second] == -1){
					mepu[v[it].second] = 1;
				}
				else{
					mepu[v[it].second]++;
				}
				it++;
			}
		}

		if(v[i] == oh.back()){
			if(mepu[oh.back().second] != -1){
				root -> update(mapping[oh.back().second],mepu[oh.back().second] );
			}

			usable[oh.back().second] = true;


 			bigans += lroot -> query(0,M - oh.size());
 			//printf("v: %d %d\n",root -> query(0,M - oh.size()),bigans);
 			bigans %= mod;

 			//printf("%d %d\n",next[v[i].second],v[i].first);

			if(next[v[i].second] == -1){
				pair<int,int> f = *lower_bound(oh.begin(),oh.end(),make_pair(v[i].first * 2 - 1, 1100100100),greater<pair<int,int>>());

				//printf("%d %d\n",mapping[v[i].second],mapping[f.second]);
				//printf("g: %d\n",(lroot -> query(mapping[v[i].second] + 1, mapping[f.second] ) - 1));

				bigans += (lroot -> query(0,mapping[v[i].second] - 1)) * (lroot -> query(mapping[v[i].second] + 1, mapping[f.second] ) - 1);
			}
			else{
				int e = lower_bound(oh.begin(),oh.end(),make_pair(next[v[i].second] * 2 - 1, 1100100100),greater<pair<int,int>>()) -> second;

                //printf("%d\n",(lroot -> query(0,mapping[v[i].second] - 1)) * (lroot -> query(mapping[v[i].second] + 1, mapping[e] ) - 1));
				bigans += (lroot -> query(0,mapping[v[i].second] - 1)) * (lroot -> query(mapping[v[i].second] + 1, mapping[e] ) - 1);
			}
			//bigans += lroot -> query(1,v[i].second - 1) * (long long int) lroot -> query(v[i].second + 1, M);
			bigans %= mod;

			//printf("%d %d %d %d\n",v[i].first,bigans,lroot -> query(1,v[i].second - 1) , (long long int) lroot -> query(v[i].second + 1, M));

			oh.pop_back();
		}
	}

	printf("%d",bigans);
}
/*
 *
5
3
700
8 3
7 2
4 1
2 3
2 2

5
3
7
2 2
5 1
8 3
4 1
2 3

2 500 200
1 1
2 1
*
 */

Compilation message

fish.cpp: In function 'int main()':
fish.cpp:100:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |  for(int i = 0; i < v.size(); i++){
      |                 ~~^~~~~~~~~~
fish.cpp:119:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  119 |  for(int i = 0; i < oh.size(); i++){
      |                 ~~^~~~~~~~~~~
fish.cpp:184:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  184 |  printf("%d",bigans);
      |          ~^  ~~~~~~
      |           |  |
      |           |  long long int
      |           int
      |          %lld
fish.cpp:115:6: warning: unused variable 'it1' [-Wunused-variable]
  115 |  int it1 = 0;
      |      ^~~
fish.cpp:73:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |  scanf(" %d",&N);
      |  ~~~~~^~~~~~~~~~
fish.cpp:74:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |  scanf(" %d",&M);
      |  ~~~~~^~~~~~~~~~
fish.cpp:76:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |  scanf(" %d",&mod);
      |  ~~~~~^~~~~~~~~~~~
fish.cpp:88:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |   scanf(" %d",&l);
      |   ~~~~~^~~~~~~~~~
fish.cpp:89:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |   scanf(" %d",&h);
      |   ~~~~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2260 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2300 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2260 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2260 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2260 KB Output is correct
2 Correct 1 ms 2272 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2272 KB Output is correct
2 Correct 144 ms 6784 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2260 KB Output is correct

Subtask #8
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2388 KB Output is correct

Subtask #9
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 4676 KB Output is correct
2 Correct 83 ms 4956 KB Output is correct

Subtask #10
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2772 KB Output is correct
2 Correct 4 ms 2516 KB Output is correct
3 Correct 4 ms 2668 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 112 ms 6768 KB Output is correct
2 Correct 190 ms 7040 KB Output is correct
3 Correct 171 ms 7320 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 6996 KB Output is correct
2 Correct 166 ms 7168 KB Output is correct

Subtask #13
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 107 ms 6780 KB Output is correct
2 Correct 207 ms 7936 KB Output is correct

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 173 ms 8716 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 211 ms 10332 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 168 ms 16216 KB Output is correct
2 Correct 197 ms 27476 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 419 ms 37544 KB Output is correct
2 Correct 296 ms 36432 KB Output is correct

Subtask #18
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 313 ms 37608 KB Output is correct
2 Correct 399 ms 27440 KB Output is correct
3 Correct 361 ms 48508 KB Output is correct
4 Correct 383 ms 27452 KB Output is correct

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 576 ms 48384 KB Output is correct
2 Runtime error 173 ms 65536 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -