Submission #313176

#	Time	Username	Problem	Language	Result	Execution time	Memory
313176		AmineWeslati	Scales (IOI15_scales)	C++14	46.14 / 100	1 ms	384 KiB

scales

//Never stop trying
#include "scales.h"
#include <bits/stdc++.h>
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

typedef string str;
typedef long long ll;
typedef double db;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
typedef vector<str> vs;
typedef vector<ld> vd;
#define pb push_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)

const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up

template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }

ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))

#define dbg(x) cerr << " - " << #x << " : " << x << endl;
#define dbgs(x,y) cerr << " - " << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << " - " << #v << " : " << endl << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;

void IO() {
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif
}



//sort 1,2,3
//sort 4,5,6
//assign {4,5,6} to their positions

void init(int T){
	return;
}




void orderCoins(){
	
	int a=getLightest(1,2,3);
	int c=getHeaviest(1,2,3);
	int b; FOR(i,1,4) if(a!=i && c!=i) b=i;
	int d,e,f;
	
	int u=getMedian(a,b,4);
	if(u==a){
	    d=c; c=b; b=a; a=4;
	}
	else if(u==4){
		d=c; c=b; b=4;
	}
	else{
		u=getMedian(b,c,4);
		if(u==4){
			d=c; c=4;
		}
		else d=4;
	}
	//cout << a << ' ' << b << ' ' << c << ' ' << d << endl;

	u=getMedian(a,b,5);
	if(u==a){
		e=d; d=c; c=b; b=a; a=5;
	}
	else if(u==5){
		e=d; d=c; c=b; b=5;
	}
	else{
		u=getMedian(c,d,5);
		if(u==c){
			e=d; d=c; c=5;
		}
		else if(u==5){
			e=d; d=5;
		}
		else{
			e=5;
		}
	}
	//cout << a << ' ' << b << ' ' << c << ' ' << d << ' ' << e << endl;

	u=getMedian(a,b,6);
	if(u==a){
		f=e; e=d; d=c; c=b; b=a; a=6;

	}
	else if(u==6){
		f=e; e=d; d=c; c=b; b=6;
	}
	else{
		u=getNextLightest(c,d,e,6);
		if(u==c){
			if(getMedian(6,c,d)==c){f=e; e=d; d=c; c=6;}
			else f=6;
		}
		else if(u==d){
			f=e; e=d; d=6;
		}
		else if(u==e){
			f=e; e=6;
		}
	}
	//cout << a << ' ' << b << ' ' << c << ' ' << d << ' ' << e << ' ' << f <<endl;
	

	int ans[6]={a,b,c,d,e,f};
	answer(ans);
	return;
}


/* Careful!!!
	.Array bounds
	.Infinite loops
	.Uninitialized variables / empty containers
	.Order of input

   Some insights:
	.Binary search
	.Graph representation
	.Write brute force code
	.Change your approach
*/

Compilation message (stderr)

scales.cpp: In function 'void init(int)':
scales.cpp:58:15: warning: unused parameter 'T' [-Wunused-parameter]
   58 | void init(int T){
      |           ~~~~^
scales.cpp: In function 'void IO()':
scales.cpp:47:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   47 |  freopen("input.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
scales.cpp:48:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   48 |  freopen("output.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
scales.cpp: In function 'void orderCoins()':
scales.cpp:133:25: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
  133 |  int ans[6]={a,b,c,d,e,f};
      |                         ^
scales.cpp:80:14: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
   80 |   u=getMedian(b,c,4);
      |     ~~~~~~~~~^~~~~~~

• Subtask 1: 46.136364 / 100