Submission #62120

#	Time	Username	Problem	Language	Result	Execution time	Memory
62120		bazsi700	ICC (CEOI16_icc)	C++14	100 / 100	873 ms	1388 KiB

icc

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

#define MOD 1000000007
#define ll long long int
#define vi vector<int>
#define vii vector< vector<int> >
#define PI 3.1415926535897932384626433832795
#define INF 9223372036854775807LL

//13:22

int root[105];
set<pair<int,int> > noedge;

int findroot(int x) {
	if(root[x] != x) {
		root[x] = findroot(root[x]);
	}
	return root[x];
}

void join(int a, int b) {
	if(rand()%2) {
		root[findroot(a)] = findroot(b);
	} else {
		root[findroot(b)] = findroot(a);
	}
}

int queryy(int as, int bs, int a[], int b[]) {
	bool check = false;
	for(int i = 0; i < as; i++) {
		if(check) {
			break;
		}
		for(int j = 0; j < bs; j++) {
			if(noedge.count({a[i],b[j]}) == 0) {
				check = true;
				break;
			}
		}
	}
	if(!check) {
		return 0;
	}
	int an = query(as,bs,a,b);
	if(an == 0) {
		for(int i = 0; i < as; i++) {
			for(int j = 0; j < bs; j++) {
				noedge.insert({a[i],b[j]});
				noedge.insert({b[j],a[i]});
			}
		}
	}
	return an;
}

void run(int n) {
	srand(124167323);
	for(int i = 1; i <= n; i++) {
		root[i] = i;
	}
	for(int i = 1; i < n; i++) {
		noedge.clear();
		set<int> roots;
		vii inroot(n+1,vi());
		for(int i = 1; i <= n; i++) {
			roots.insert(findroot(i));
			inroot[root[i]].push_back(i);
		}
		int x,y;
		x = -1;
		y = -1;
		vector<int> root1;
		vector<int> root1gr;
		vector<int> root2;
		vector<int> root2gr;
		while(true) {
			root1.clear();
			root2.clear();
			root1gr.clear();
			root2gr.clear();
			int s1 = 0;
			int s2 = 0;
			for(int rt : roots) {
				if(rand()%2) {
					root1.push_back(rt);
					s1+= inroot[rt].size();
				} else {
					root2.push_back(rt);
					s2+= inroot[rt].size();
				}
			}
			if(root2.empty() || int(root1.size())-int(root2.size()) > (n-i)/2+1) {
				root2.push_back(root1[root1.size()-1]);
				root1.pop_back();
				s1-= inroot[root2[0]].size();
				s2+= inroot[root2[0]].size();
			}
			if(root1.empty() || int(root2.size())-int(root1.size()) > (n-i)/2+1) {
				root1.push_back(root2[root2.size()-1]);
				root2.pop_back();
				s1+= inroot[root1[0]].size();
				s2-= inroot[root1[0]].size();
			}
			for(int rt : root1) {
				for(int el : inroot[rt]) {
					root1gr.push_back(el);
				}
			}
			for(int rt : root2) {
				for(int el : inroot[rt]) {
					root2gr.push_back(el);
				}
			}
			int a[root1gr.size()];
			int b[root2gr.size()];
			int ind = 0;
			for(int el : root1gr) {
				a[ind++] = el;
			}
			ind = 0;
			for(int el : root2gr) {
				b[ind++] = el;
			}
			int an = queryy(root1gr.size(),root2gr.size(),a,b);
			if(an == 1) {
				break;
			}
		}
		int ind = 0;
		vector<int> tempgr;
		for(int el : root2gr) {
			bool bad = true;
			for(int el2 : root1gr) {
				if(noedge.count({el,el2}) == 0) {
					bad = false;
					break;
				}
			}
			if(!bad) {
				tempgr.push_back(el);
			}
		}
		root2gr.clear();
		for(int el : tempgr) {
			root2gr.push_back(el);
		}
		tempgr.clear();
		for(int el : root1gr) {
			bool bad = true;
			for(int el2 : root2gr) {
				if(noedge.count({el,el2}) == 0) {
					bad = false;
					break;
				}
			}
			if(!bad) {
				tempgr.push_back(el);
			}
		}
		root1gr.clear();
		for(int el : tempgr) {
			root1gr.push_back(el);
		}
		int b[root2gr.size()];
		for(int el : root2gr) {
			b[ind++] = el;
		}
		vector<int> gr1;
		vector<int> gr2;
		ind = 0;
		for(int el : root1gr) {
			if(ind*2 < root1gr.size()) {
				gr1.push_back(el);
			} else {
				gr2.push_back(el);
			}
			ind++;
		}
		while(gr1.size() > 0 && gr2.size() > 0) {
			int a[gr1.size()];
			ind = 0;
			for(int el : gr1) {
				a[ind++] = el;
			}
			int an = queryy(gr1.size(),root2gr.size(),a,b);
			if(an) {
				gr2.clear();
				int ind = 0;
				for(int el : gr1) {
					if(ind*2 >= gr1.size()) {
						gr2.push_back(el);
					}
					ind++;
				}
				for(int tim = 0; tim < gr2.size(); tim++) {
					gr1.pop_back();
				}
			} else {
				gr1.clear();
				int ind = 0;
				for(int el : gr2) {
					if(ind*2 >= gr2.size()) {
						gr1.push_back(el);
					}
					ind++;
				}
				for(int tim = 0; tim < gr1.size(); tim++) {
					gr2.pop_back();
				}
			}
		}
		if(gr1.empty()) {
			x = gr2[0];
		} else {
			x = gr1[0];
		}
		gr1.clear();
		gr2.clear();
		tempgr.clear();
		for(int el : root2gr) {
			bool bad = true;

			if(noedge.count({el,x}) == 0) {
				bad = false;
			}
			if(!bad) {
				tempgr.push_back(el);
			}
		}
		root2gr.clear();
		for(int el : tempgr) {
			root2gr.push_back(el);
		}
		ind = 0;
		for(int el : root2gr) {
			if(ind*2 < root2gr.size()) {
				gr1.push_back(el);
			} else {
				gr2.push_back(el);
			}
			ind++;
		}
		while(gr1.size() > 0 && gr2.size() > 0) {
			int bb[gr1.size()];
			int a[1];
			a[0] = x;
			ind = 0;
			for(int el : gr1) {
				bb[ind++] = el;
			}
			int an = queryy(1,gr1.size(),a,bb);
			if(an) {
				gr2.clear();
				int ind = 0;
				for(int el : gr1) {
					if(ind*2 >= gr1.size()) {
						gr2.push_back(el);
					}
					ind++;
				}
				for(int tim = 0; tim < gr2.size(); tim++) {
					gr1.pop_back();
				}
			} else {
				gr1.clear();
				int ind = 0;
				for(int el : gr2) {
					if(ind*2 >= gr2.size()) {
						gr1.push_back(el);
					}
					ind++;
				}
				for(int tim = 0; tim < gr1.size(); tim++) {
					gr2.pop_back();
				}
			}
		}
		if(gr1.empty()) {
			y = gr2[0];
		} else {
			y = gr1[0];
		}
		join(x,y);
		setRoad(x,y);
	}
}

Compilation message (stderr)

icc.cpp: In function 'void run(int)':
icc.cpp:176:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(ind*2 < root1gr.size()) {
       ~~~~~~^~~~~~~~~~~~~~~~
icc.cpp:194:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if(ind*2 >= gr1.size()) {
         ~~~~~~^~~~~~~~~~~~~
icc.cpp:199:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int tim = 0; tim < gr2.size(); tim++) {
                      ~~~~^~~~~~~~~~~~
icc.cpp:206:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if(ind*2 >= gr2.size()) {
         ~~~~~~^~~~~~~~~~~~~
icc.cpp:211:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int tim = 0; tim < gr1.size(); tim++) {
                      ~~~~^~~~~~~~~~~~
icc.cpp:240:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(ind*2 < root2gr.size()) {
       ~~~~~~^~~~~~~~~~~~~~~~
icc.cpp:260:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if(ind*2 >= gr1.size()) {
         ~~~~~~^~~~~~~~~~~~~
icc.cpp:265:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int tim = 0; tim < gr2.size(); tim++) {
                      ~~~~^~~~~~~~~~~~
icc.cpp:272:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if(ind*2 >= gr2.size()) {
         ~~~~~~^~~~~~~~~~~~~
icc.cpp:277:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int tim = 0; tim < gr1.size(); tim++) {
                      ~~~~^~~~~~~~~~~~

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