Submission #416512

#	Time	Username	Problem	Language	Result	Execution time	Memory
416512		yanire	Wiring (IOI17_wiring)	C++11	7 / 100	130 ms	262148 KiB

wiring

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

#define fin(i,s,n) for(auto i = s; i < n; ++i)
#define fine(i,s,n) for(auto i = s; i <= n; ++i)
#define pb push_back
#define eb emplace_back
#define x first
#define y second
#define all(x) (x).begin(),(x).end()
#define chkmin(a,b) a = min(a,b)
#define chkmax(a,b) a = max(a,b)
using stdvec = vector<int>;
#define int int64_t
using ii = pair<int,int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vii = vector<ii>;
const int inf = 1e17;
#define sz(a) int((a).size())

template<class T> ostream& operator<<(ostream& os, vector<T> v) {
    if(v.empty()) return os << "[]";
    os << '[' << v[0];
    fin(i,1,sz(v)) os << ',' << v[i];
    return os << ']';
}

ii bop(stdvec& a, int x) {
    if(x<a[0]) return {0,0};
    if(x>a.back()) return {sz(a)-1,sz(a)-1};
    int idx = lower_bound(all(a),x)-a.begin();
    return {idx-1,idx};
}
int dist(stdvec& a, int x) {
    ii ops = bop(a,x);
    return min(abs(a[ops.x]-x),abs(a[ops.y]-x));
}
long long min_total_length(stdvec r, stdvec b) {
    int n = r.size(), m = b.size();
    vvi dp(n,vi(m,inf));
    dp[0][0] = abs(r[0]-b[0]);
    fin(i,0,n) {
        if(i) dp[i][0] = dp[i-1][0]+abs(r[i]-b[0]);
        fin(j,1,m) {
            if(i) chkmin(dp[i][j],dp[i-1][j]+dist(b,r[i]));
            chkmin(dp[i][j],dp[i][j-1]+dist(r,b[j]));
            if(i) chkmin(dp[i][j],dp[i-1][j-1]+abs(r[i]-b[j]));
        }
    }
    return dp[n-1][m-1];
}

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