Submission #23377

#	Time	Username	Problem	Language	Result	Execution time	Memory
23377		rubabredwan	ICC (CEOI16_icc)	C++14	61 / 100	179 ms	2272 KiB

icc

/* Bismillahir Rahmanir Rahim */

#include <bits/stdc++.h>
#include "icc.h"

using namespace std;

const int N = 105;

int n, par[N], mat[N][N];
set<int>comp;
vector<int>nudes[N];

int Find(int at){
    return par[at] == at ? at : par[at] = Find(par[at]);
}

void Union(int a, int b){
    int x = Find(a);
    int y = Find(b);
    /* cout << "ADD " << a << ' ' << b << endl; */
    for(auto u : nudes[y]){
        nudes[x].push_back(u);
    }
    par[y] = x;
    comp.erase(y);
}

/* void setRoad(int a, int b){ */
/*     if(a) Union(a, b); */
/*     int x, y; */
/*     cin >> x >> y; */
/*     mat[x][y] = 1; */
/*     mat[y][x] = 1; */
/* } */

/* int query(int sa, int sb, int a[], int b[]){ */
/*     for(int i=0;i<sa;i++){ */
/*         for(int j=0;j<sb;j++){ */
/*             if(mat[a[i]][b[j]]) return true; */
/*         } */
/*     } */
/*     return false; */
/* } */

int fuk[N], tt;

int get(int sa, int sb, int a[], int b[]){
    int lo = 0, hi = sb - 1;
    while(lo < hi){
        int mid = (lo + hi) / 2; tt = 0;
        for(int i=lo;i<=mid;i++) fuk[tt] = b[i], ++tt;
        if(query(sa, tt, a, fuk)) hi = mid;
        else lo = mid + 1;
    }
    return b[lo];
}

int aa[N], bb[N];
int sa, sb;

void run(int _n){
    srand(time(NULL));
    n = _n;
    comp.clear();
    for(int i=1;i<=n;i++){
        par[i] = i;
        comp.insert(i);
        nudes[i].push_back(i);
    }
    int road = n - 1;
    while(road--){
        while(1){
            sa = 0, sb = 0;
            vector<int>nd;
            for(auto u : comp) nd.push_back(u);
            random_shuffle(nd.begin(), nd.end());
            int mid = nd.size() / 2;
            for(int i=0;i<mid;i++){
            	for(auto u : nudes[nd[i]]){
            		aa[sa] = u;
            		++sa;
            	}
            }
            for(int i=mid;i<nd.size();i++){
            	for(auto u : nudes[nd[i]]){
            		bb[sb] = u;
            		++sb;
            	}
            }
            /* cout << "-------\n"; */
            /* cout << nd.size() << ' ' << comp.size() << endl; */
            /* for(auto u : comp) cout << u << ' '; cout << endl; */
            /* for(int i=0;i<sa;i++) cout << aa[i] << ' '; cout << endl; */
            /* for(int i=0;i<sb;i++) cout << bb[i] << ' '; cout << endl; */
            if(query(sa, sb, aa, bb)){
            	int x = get(sa, sb, aa, bb);
            	int y = get(sb, sa, bb, aa);
            	Union(x, y);
            	setRoad(x, y);
                break;
            }
        }
    }
}

/* int main(){ */
/*     int ff, x, y; */
/*     scanf("%d", &ff); */
/*     setRoad(0, 0); */
/*     run(ff); */
/* 	return 0; */
/* } */

Compilation message (stderr)

icc.cpp: In function 'void run(int)':
icc.cpp:85:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i=mid;i<nd.size();i++){
                            ^

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 22 / 22
• Subtask 4: 21 / 21
• Subtask 5: 0 / 29
• Subtask 6: 0 / 10