Submission #288116

#	Time	Username	Problem	Language	Result	Execution time	Memory
288116		emanIaicepsa	Jousting tournament (IOI12_tournament)	C++14	17 / 100	997 ms	1408 KiB

tournament

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,fma,sse,sse2,sse3,avx2")
#include<bits/stdc++.h>
#define mem(x,i) memset(x,i,sizeof(x))
#define dbg(x) cerr<<#x<<" = "<<x<<'\n';
using namespace std;
int bit[5005], arr[5005], newarr[5005], l[5005], r[5005], n, lgn, c;

int solve(int x){
	int ans = 0, p = arr[x];
	for(int i=1;i<=n;i++) newarr[i] = arr[i];

	for(int i=1;i<=c;i++){
		bool used = 0;
		int mxid = l[i];
		used |= (newarr[mxid] == p);
		
		for(int j=l[i]+1;j<=r[i];j++){
			used |= (newarr[j] == p);
			if(newarr[j] > newarr[mxid]){
				newarr[mxid] = -1;
				mxid = j;
			}
			else newarr[j] = -1;
		}
		if(newarr[mxid] == p) ans++;
		else if(used) return ans;
		int idx = 1;
		for(int i=1;i<=n;i++){
			if(newarr[i] != -1) newarr[idx++] = newarr[i];
		}
	}
	return ans;
}

int GetBestPosition(int N, int C, int R, int *K, int *S, int *E) {
	auto st = clock();
	n = N;
	c = C;
	lgn = __lg(n);
	arr[1] = R;
	for(int i=2;i<=n;i++) arr[i] = K[i-2];
	for(int i=1;i<=c;i++) l[i] = S[i-1]+1, r[i] = E[i-1]+1;
	int ans = 0, cur = solve(1);
	for(int i=1;i<n;i++){
		if((clock() - st) * 1.0 / CLOCKS_PER_SEC > 0.98) return ans;
		swap(arr[i], arr[i+1]);
		int x = solve(i+1);
		if(x > cur) ans = i, cur = x;
	}
	return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51