Submission #33898

#	Time	Username	Problem	Language	Result	Execution time	Memory
33898		mohammad_kilani	Wiring (IOI17_wiring)	C++14	20 / 100	43 ms	6324 KiB

wiring

#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 500;
vector<int> r , b;
long long dp[N][N];
int n , m;
long long solve(int i,int j){
	if(i == n && j == m) return 0;
	if(j == m) return 1e18;
	if(dp[i][j] != -1) return dp[i][j];
	dp[i][j] = min(solve(i+1,j),min(solve(i,j+1),solve(i+1,j+1))) + abs(r[i] - b[j]);
	return dp[i][j];
}




long long min_total_length(std::vector<int> R, std::vector<int> B) {
	memset(dp,-1,sizeof(dp));
	r = R;
	b = B;
	n = r.size();
	m = b.size();
	if(n <= 500 && m <= 500) return solve(0,0);
	if(r.back() < b[0]){
		long long sum = 0 ;
		int idx = 0 ;
		int idx2 = 0;
		for(int i=0;i<min(n,m);i++) sum += abs(r[idx++] - b[idx2++]);
		for(int i=idx;i<r.size();i++) sum+= abs(r[i] - b[0]);
		for(int i=idx2;i<b.size();i++) sum+= abs(b[i] - r.back());
		return sum;
	}
	return rand();

}

Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=idx;i<r.size();i++) sum+= abs(r[i] - b[0]);
                  ^
wiring.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=idx2;i<b.size();i++) sum+= abs(b[i] - r.back());
                   ^

• Subtask 1: 7 / 7
• Subtask 2: 13 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45