Submission #591965

#	Time	Username	Problem	Language	Result	Execution time	Memory
591965		l_reho	말 (IOI15_horses)	C++14	17 / 100	27 ms	26300 KiB

horses

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

long long dp[1001][2];

int init(int N, int X[], int Y[]) {
	
	// dp.assign(N, vector<long long>(1000, 0));
	
	vector<long long> pref(N+1, 0);
	
	pref[0] = 1;
	
	for(int i = 1; i <= N; i++)
		pref[i] = pref[i-1] * X[i-1];
			
	vector<long long> prod(N+1, 0);
	
	prod[0] = 1;
	
	for(int i = 1; i <= N; i++) prod[i] = prod[i-1]*X[i-1];
	
	for(int i = 0; i < N; i++){
		for(int j = 0; j <= i; j++){
			long long K = prod[i+1]/prod[j]; 
			
			dp[i+1][0] = max(dp[i+1][0], dp[j][0] + (K-1)*Y[i]);
			dp[i+1][1] = max(dp[i+1][1], dp[j][0] + K*Y[i]);
			
			// cout<<i+1<<" "<<dp[i+1][0]<<" "<<dp[i+1][1]<<endl;
			
		}
	}
	
	long long ans = 0;
	
	for(int i = 0; i <= N; i++){
		ans = max(ans, dp[i][1]);
	}
	

	return ans;
}

int updateX(int pos, int val) {	
	return 0;
}

int updateY(int pos, int val) {
	return 0;
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:44:9: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   44 |  return ans;
      |         ^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:47:17: warning: unused parameter 'pos' [-Wunused-parameter]
   47 | int updateX(int pos, int val) {
      |             ~~~~^~~
horses.cpp:47:26: warning: unused parameter 'val' [-Wunused-parameter]
   47 | int updateX(int pos, int val) {
      |                      ~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:51:17: warning: unused parameter 'pos' [-Wunused-parameter]
   51 | int updateY(int pos, int val) {
      |             ~~~~^~~
horses.cpp:51:26: warning: unused parameter 'val' [-Wunused-parameter]
   51 | int updateY(int pos, int val) {
      |                      ~~~~^~~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23