oj.uz

Submission #626472

# Submission time Handle Problem Language Result Execution time Memory
626472 2022-08-11T13:17:16 Z Antekb Catfish Farm (IOI22_fish) C++17
9 / 100
 148 ms 32364 KB 
#include "fish.h"
#include <bits/stdc++.h>
#define pb push_back
#define st first
#define nd second
using namespace std;
using ll = long long;
const int INF=1e9+5;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll max_weights(int n, int m, std::vector<int> X, std::vector<int> Y, std::vector<int> W) {
	/*n=1e5;
	m=1e5;
	X.resize(m);
	Y.resize(m);
	W.resize(m);
	for(int i=0; i<m; i++){
		X[i]=(rng()%(n/2))*2+2;
		Y[i]=rng()%n;
		W[i]=rng();
	}*/
	for(auto &i:X)i++;
	ll ans=0;
	for(int i:W)ans+=i;
	//return ans;
	vector<pair<int, int> > V[n+2];	
	vector<ll> dp[n+2][2];
	ll dp2[n+2][2];
	for(int i=0; i<=n+1; i++)dp2[i][0]=dp2[i][1]=0;
	for(int i=0; i<m; i++){
		V[X[i]].pb({Y[i], W[i]});
	}
	for(int i=0; i<=n+1; i++){
		V[i].pb({n, INF});
		sort(V[i].begin(), V[i].end());
		dp[i][0].resize(V[i].size());
		dp[i][1].resize(V[i].size());
	}
	dp[0][1][0]=dp[0][0][0]=-1e18;
	for(int i=1; i<=n+1; i++){
		ll s=0;
		int wsk=0;
		for(int j=0; j<V[i-1].size(); j++){
			dp[i-1][0][j]-=s;
			s+=V[i-1][j].nd;
		}
		ll m=dp2[i-1][0];
		dp2[i][0]=max(dp2[i-1][0], dp2[i-1][1]);
		s=0;
		for(int j=0; j<V[i].size(); j++){
			while(wsk<V[i-1].size() && V[i][j].st>V[i-1][wsk].st){
				m=max(m, dp[i-1][0][wsk]);
				s+=V[i-1][wsk].nd;
				wsk++;
			}
			dp[i][0][j]=s+m;
		}
		wsk=V[i-1].size()-1;
		m=dp[i-1][1][wsk];
		for(int j=V[i].size()-2; j>=0; j--){
			while(wsk!=0 && V[i-1][wsk-1].st>=V[i][j].st){
				m=max(m, dp[i-1][1][wsk-1]);
				wsk--;
			}
			dp[i][1][j]=m;
			m+=V[i][j].nd;
		}
		for(int j=0; j<V[i-1].size(); j++)dp2[i][0]=max(dp2[i][0], dp[i-1][1][j]);
		dp2[i][1]=max(m, dp2[i][0]);
		for(int j=0; j<V[i].size(); j++){
			dp[i][0][j]=max(dp[i][0][j], dp2[i-1][1]);
		}
		for(int j=0; j<V[i].size(); j++){
			dp[i][1][j]=max(dp[i][0][j], dp[i][1][j]);
		}
		//cout<<i<<"\n";
		//cout<<dp2[i][0]<<" "<<dp2[i][1]<<" a\n";
		for(int j=0; j<V[i].size(); j++){
			//cout<<dp[i][0][j]<<" "<<dp[i][1][j]<<" b\n";
		}
	}
	//assert(dp2[n+1][0]==ans);
	return dp2[n+1][0];
}

Compilation message

fish.cpp: In function 'll max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for(int j=0; j<V[i-1].size(); j++){
      |                ~^~~~~~~~~~~~~~
fish.cpp:49:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   for(int j=0; j<V[i].size(); j++){
      |                ~^~~~~~~~~~~~
fish.cpp:50:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |    while(wsk<V[i-1].size() && V[i][j].st>V[i-1][wsk].st){
      |          ~~~^~~~~~~~~~~~~~
fish.cpp:67:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |   for(int j=0; j<V[i-1].size(); j++)dp2[i][0]=max(dp2[i][0], dp[i-1][1][j]);
      |                ~^~~~~~~~~~~~~~
fish.cpp:69:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |   for(int j=0; j<V[i].size(); j++){
      |                ~^~~~~~~~~~~~
fish.cpp:72:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |   for(int j=0; j<V[i].size(); j++){
      |                ~^~~~~~~~~~~~
fish.cpp:77:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |   for(int j=0; j<V[i].size(); j++){
      |                ~^~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 20288 KB Output is correct
2 Correct 61 ms 22932 KB Output is correct
3 Correct 25 ms 18240 KB Output is correct
4 Correct 25 ms 18176 KB Output is correct
5 Correct 142 ms 32364 KB Output is correct
6 Correct 148 ms 31900 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 81 ms 24112 KB Output is correct
3 Correct 98 ms 27712 KB Output is correct
4 Correct 56 ms 20176 KB Output is correct
5 Correct 60 ms 22952 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 25 ms 18296 KB Output is correct
11 Correct 24 ms 18240 KB Output is correct
12 Correct 53 ms 20288 KB Output is correct
13 Correct 61 ms 22908 KB Output is correct
14 Correct 58 ms 20220 KB Output is correct
15 Correct 59 ms 22592 KB Output is correct
16 Correct 51 ms 20324 KB Output is correct
17 Correct 56 ms 22472 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 18268 KB Output is correct
2 Correct 24 ms 18292 KB Output is correct
3 Incorrect 44 ms 17740 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21208021504361'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 18268 KB Output is correct
2 Correct 24 ms 18292 KB Output is correct
3 Incorrect 44 ms 17740 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21208021504361'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 20288 KB Output is correct
2 Correct 61 ms 22932 KB Output is correct
3 Correct 25 ms 18240 KB Output is correct
4 Correct 25 ms 18176 KB Output is correct
5 Correct 142 ms 32364 KB Output is correct
6 Correct 148 ms 31900 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 81 ms 24112 KB Output is correct
9 Correct 98 ms 27712 KB Output is correct
10 Correct 56 ms 20176 KB Output is correct
11 Correct 60 ms 22952 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 25 ms 18296 KB Output is correct
17 Correct 24 ms 18240 KB Output is correct
18 Correct 53 ms 20288 KB Output is correct
19 Correct 61 ms 22908 KB Output is correct
20 Correct 58 ms 20220 KB Output is correct
21 Correct 59 ms 22592 KB Output is correct
22 Correct 51 ms 20324 KB Output is correct
23 Correct 56 ms 22472 KB Output is correct
24 Correct 24 ms 18268 KB Output is correct
25 Correct 24 ms 18292 KB Output is correct
26 Incorrect 44 ms 17740 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21208021504361'
27 Halted 0 ms 0 KB -