Cod sursa(job #213659)

Utilizator Data 10 octombrie 2008 20:59:12
Problema Buline Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.8 kb
using namespace std;

#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <vector>
#include <string>
#include <algorithm>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <queue>
#include <utility>
#include <functional>

#define pb push_back
#define f first
#define s second
#define sz size
#define II inline
#define ll long long
#define db double
#define FOR(i,a,b) for(int i=a;i<=b;++i)
#define all(v) v.begin() , v.end()
#define C(v) C.erase( all(v) )
#define FORit(it,v) for(it = (v).begin();it != (v).end();++it)
#define mp make_pair

#define N_MAX 1<<18
#define IN "buline.in"
#define OUT "buline.out"
#define oo 1<<30

int N;
int S[N_MAX],T[N_MAX],V[N_MAX];

II void scan()
{
	int x,y;
	freopen(IN,"r",stdin);
	freopen(OUT,"w",stdout);
	scanf("%d\n",&N);
	FOR(i,1,N)
	{
		scanf("%d %d\n",&x,&y);
		if(y)
		{
			V[i] = x;
			continue;
		}
		V[i] = -x;
	}
}

II void solve()
{
	int start(0),end(0);
	FOR(i,1,N)
	{
		S[i] = S[i-1] + V[i];
		T[i] = max(T[i-1],S[i]);
	}
	
	int suma(0),best(-oo);
	FOR(i,1,N)
		if(V[i] > best)
		{
			best = V[i];
			end = i;
		}	
	
	FOR(i,1,N)
	{
		suma += V[i];
		
		if(suma > best)
		{
			best = suma;
			end = i;
		}	
		if(suma < 0)
			suma = 0;
	}	
	
	FOR(i,1,N)
	{
		if(best < S[N] - S[i-1] + T[i-1])
		{
			best = S[N] - S[i-1] + T[i-1];
			end = 0;
			start = i;
		}
	}

	suma = 0;
	if(!end)
		for(int i=start;;suma += V[i],++i)
		{
			if(i == N+1)
				i = 1;
			if(suma == best)
			{
				printf("%d %d %d\n",best,start,N-start+i);
				return;
			}	
		}	
	else
		for(int i=end;;suma += V[i],--i)
			if(suma == best)
			{
				printf("%d %d %d\n",best,i+1,end-i);
				return;
			}	
}

int main()
{
	scan();
	solve();
	return 0;
}