Submission #886105

#	Time	Username	Problem	Language	Result	Execution time	Memory
886105		qin	Wiring (IOI17_wiring)	C++17	13 / 100	21 ms	4700 KiB

wiring

#include <bits/stdc++.h>
#define fi first
#define se second
#define ssize(x) int(x.size())
#define pn printf("\n")
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
int inf = 2e09; ll infll = 2e18; int mod = 119<<23|1;
ll min_total_length(vector<int> r, vector<int> B){
		int n = ssize(r), m = ssize(B);
		vector<int> a(n+1), b(m+1);
		for(int i = 1; i <= n; ++i) a[i] = r[i-1];
		for(int i = 1; i <= m; ++i) b[i] = B[i-1];
		
		if(n <= 200 && m >= 200){
				vector<vector<ll>> dp(n+1, vector<ll>(m+1, infll));
				dp[1][1] = abs(a[1]-b[1]);
				for(int i = 1; i <= n; ++i){
						for(int j = 1; j <= m; ++j){
								if(i != n) dp[i+1][j] = min(dp[i+1][j], dp[i][j]+abs(a[i+1]-b[j]));
								if(j != m) dp[i][j+1] = min(dp[i][j+1], dp[i][j]+abs(a[i]-b[j+1]));
								if(i != n && j != m) dp[i+1][j+1] = min(dp[i+1][j+1], dp[i][j]+abs(a[i+1]-b[j+1]));
						}
				}
				return dp[n][m];
		}
		else{
				if(n > m) swap(n, m), swap(a, b);
				ll result = 0;
				for(int i = 1; i <= m; ++i) result += b[i] > a.back() ? b[i]-a.back() : a[1]-b[i];
				for(int i = 1; i <= n; ++i) result += b[1] > a[1] ? a.back()-a[i] : a[i]-a[1];
				return result;
		}
}
#ifdef LOCAL
int main(){
		int T = 1; 
		for(++T; --T; ){
				int n, m; scanf("%d%d", &n, &m);
				vector<int> a(n), b(m);
				for(int i = 0; i < n; ++i) scanf("%d", &a[i]);
				for(int i = 0; i < m; ++i) scanf("%d", &b[i]);
				printf("%lld\n", min_total_length(a, b));
		}
		return 0;
}
#endif

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