Submission #1183402

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183402		mertbbm	ICC (CEOI16_icc)	C++20	Compilation error	0 ms	0 KiB

icc

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

//#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

struct DSU{
	vector<int>e;
	void init(int n){
		e=vector<int>(n,-1);
	}
	
	int get(int x){
		return e[x]<0?x:e[x]=get(e[x]);
	}
	
	bool unite(int x, int y){
		x=get(x); y=get(y);
		if(x==y) return 0;
		if(e[x]>e[y]) swap(x,y);
		e[x]+=e[y];
		e[y]=x;
		return 1;
	}
};

//int query(int a, int b, int arr[], int arr2[]){
	//for(int x=0;x<a;x++) cout << arr[x] << " ";
	//cout << "\n";
	//for(int x=0;x<b;x++) cout << arr2[x] << " ";
	//cout << "\n";
	//int ret;
	//cin >> ret;
	//cout << "\n";
	//return ret;
//}

//void setRoad(int a, int b){
	//show2(edge,a,edge,b);
//}

void run(int n){
	int n;
	//cin >> n;
	DSU dsu;
	dsu.init(n+5);
	vector<int>bit={2,4,8,16,32,64,128};
	for(int x=0;x<n-1;x++){
		int a[105];
		int b[105];
		int ptr=0;
		int ptr2=0;
		vector<int>nodes;
		for(int y=1;y<=n;y++){
			nodes.push_back(y-1);
		}
		
		int need=lower_bound(bit.begin(),bit.end(),nodes.size())-bit.begin();
		
		for(int y=0;y<=need;y++){
			ptr=0;
			ptr2=0;
			for(auto it:nodes){
				if(it&(1<<y)){
					a[ptr++]=it+1;
				}
				else{
					b[ptr2++]=it+1;
				}
			}
			if(query(ptr,ptr2,a,b)){
				break;
			}
		}
		
		//decomp
		while(ptr>1||ptr2>1){
			//2 queries
			int a1[105];
			int b1[105];
			int a2[105];
			int b2[105];
			int a11=0;
			int a22=0;
			int b11=0;
			int b22=0;
			for(int y=0;y<ptr;y++){
				if(y%2){
					//a1.push_back(a[y]);
					a1[a11++]=a[y];
				}
				else{
					//a2.push_back(a[y]);
					a2[a22++]=a[y];
				}
			}
			
			for(int y=0;y<ptr2;y++){
				if(y%2){
					//b1.push_back(b[y]);
					b1[b11++]=b[y];
				}
				else{
					//b2.push_back(b[y]);
					b2[b22++]=b[y];
				}
			}
			
			bool hold=query(a11,ptr2,a1,b);
			if(hold){
				hold=query(a11,b11,a1,b1);
				for(int i=0;i<a11;i++){
					a[i]=a1[i];
				}
				ptr=a11;
				if(hold){
					for(int i=0;i<b11;i++){
						b[i]=b1[i];
					}
					ptr2=b11;
				}
				else{
					for(int i=0;i<b22;i++){
						b[i]=b2[i];
					}
					ptr2=b22;
				}
			}
			else{
				for(int i=0;i<a22;i++){
					a[i]=a2[i];
				}
				ptr=a22;
				hold=query(a22,b11,a2,b1);
				if(hold){
					for(int i=0;i<b11;i++){
						b[i]=b1[i];
					}
					ptr2=b11;
				}
				else{
					for(int i=0;i<b22;i++){
						b[i]=b2[i];
					}
					ptr2=b22;
				}
			}
		}
		
		dsu.unite(a[0],b[0]);
		setRoad(a[0],b[0]);
	}
}

Compilation message (stderr)

icc.cpp: In function 'void run(int)':
icc.cpp:50:13: error: declaration of 'int n' shadows a parameter
   50 |         int n;
      |             ^
icc.cpp:49:14: note: 'int n' previously declared here
   49 | void run(int n){
      |          ~~~~^