Submission #171632

#	Time	Username	Problem	Language	Result	Execution time	Memory
171632		losmi247	Wiring (IOI17_wiring)	C++14	20 / 100	38 ms	5372 KiB

wiring

#include <bits/stdc++.h>
#include "wiring.h"
using namespace std;
typedef long long ll;
const ll N = 1e5+34;
const ll inf = 2e9;
const ll linf = 1e18;


ll dp[205][205];
ll najboljicrveni[205][205],najboljiplavi[205][205];
ll crveni[N],plavi[N];
int n,m;

ll prvi(){
    for(int i = 0; i <= n; i++){
        for(int j = 0; j <= m; j++){
            dp[i][j] = linf;
            najboljicrveni[i][j] = najboljiplavi[j][i] = linf;
        }
    }
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            najboljicrveni[i][j] = min(najboljicrveni[i][j-1],abs(crveni[i]-plavi[j]));
        }
    }
    for(int j = 1; j <= m; j++){
        for(int i = 1; i <= n; i++){
            najboljiplavi[j][i] = min(najboljiplavi[j][i-1],abs(plavi[j]-crveni[i]));
        }
    }
    dp[0][0] = 0;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            dp[i][j] = min({dp[i-1][j]+najboljicrveni[i][j],dp[i][j-1]+najboljiplavi[j][i],dp[i-1][j-1]+abs(crveni[i]-plavi[j])});
        }
    }
    return dp[n][m];
}

ll drugi(){
    ll sol = 0,idc = n,idp = 1;
    while(idc >= 1 && idp <= m){
        sol += plavi[idp]-crveni[idc];
        idp++;
        idc--;
    }
    while(idc >= 1){
        sol += plavi[1]-crveni[idc];
        idc--;
    }
    while(idp <= m){
        sol += plavi[idp]-crveni[n];
        idp++;
    }
    return sol;
}

ll min_total_length(vector <int> r,vector <int> b){
    n = r.size(),m = b.size();
    ll maxr = 0,minb = inf;
    for(int i = 1; i <= n; i++){
        crveni[i] = r[i-1];
        maxr = max(maxr,crveni[i]);
    }
    for(int i = 1; i <= m; i++){
        plavi[i] = b[i-1];
        minb = min(minb,plavi[i]);
    }
    if(maxr < minb){
        return drugi();
    }
    if(n <= 200 && m <= 200){
        return prvi();
    }
}

/*int main(){
    vector <int> a,b;
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        int x;
        cin >> x;
        a.push_back(x);
    }
    for(int j = 1; j <= m; j++){
        int x;
        cin >> x;
        b.push_back(x);
    }
    cout << min_total_length(a,b) << endl;
}*/

Compilation message (stderr)

wiring.cpp: In function 'll min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:76:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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