Submission #140801

#	Time	Username	Problem	Language	Result	Execution time	Memory
140801		cheetose	즐거운 사진 수집 (JOI13_collecting)	C++11	100 / 100	2878 ms	70168 KiB

collecting

#include<cstdio>
#include<cstdlib>
#include<iostream>
#include<vector>
#include<queue>
#include<bitset>
#include<string>
#include<stack>
#include<set>
#include<unordered_set>
#include<map>
#include<unordered_map>
#include<cstring>
#include<complex>
#include<cmath>
#include<iomanip>
#include<numeric>
#include<algorithm>
#include<list>
#include<functional>
#include<cassert>
#define mp make_pair
#define pb push_back
#define X first
#define Y second
#define y0 y12
#define y1 y22
#define INF 987654321987654321
#define PI 3.141592653589793238462643383279502884
#define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
#define fdn(i,a,b,c) for(int (i)=(a);(i)>=(b);(i)-=(c))
#define MEM0(a) memset((a),0,sizeof(a));
#define MEM_1(a) memset((a),-1,sizeof(a));
#define ALL(a) a.begin(),a.end()
#define SYNC ios_base::sync_with_stdio(false);cin.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
typedef pair<ld, ld> Pd;
typedef vector<int> Vi;
typedef vector<ll> Vll;
typedef vector<double> Vd;
typedef vector<Pi> VPi;
typedef vector<Pll> VPll;
typedef vector<Pd> VPd;
typedef tuple<int, int, int> iii;
typedef tuple<int,int,int,int> iiii;
typedef tuple<ll, ll, ll> LLL;
typedef vector<iii> Viii;
typedef vector<LLL> VLLL;
typedef complex<double> base;
const ll MOD = 998244353;
ll POW(ll a, ll b, ll MMM = MOD) {ll ret=1; for(;b;b>>=1,a=(a*a)%MMM)if(b&1)ret=(ret*a)% MMM; return ret; }
ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
ll lcm(ll a, ll b) { if (a == 0 || b == 0)return a + b; return a*(b / gcd(a, b)); }
int dx[] = { 0,1,0,-1,1,1,-1,-1 }, dy[] = { 1,0,-1,0,1,-1,1,-1 };

struct FenwickTree{
	int n;
	Vi tree;
	
	FenwickTree(int N){
		n=N;
		tree.resize(N+1);
	}
	
	void upd(int i, int k)
	{
		while (i <= n)
		{
			tree[i] += k;
			i += (i&-i);
		}
	}
	int sum(int i)
	{
		int c = 0;
		while (i > 0)
		{
			c += tree[i];
			i -= (i&-i);
		}
		return c;
	}
};
vector<FenwickTree> LRcnt,UDcnt;
ll ans=1;
void cal(int x,int z,int i,FenwickTree &LR,vector<FenwickTree> &LRcnt,vector<FenwickTree> &UDcnt,Vi &v,int xx)
{
	if(z==1)return;
	int t1=LR.sum(x+z-1)-LR.sum(x-1);
	int t2=UDcnt[i].sum(1<<i);
	if(t1==0 || t1==z)
	{
		ans-=4*t2;
		LRcnt[i].upd(1+x/z,1);
	}
	else if((t1==1 && v[xx]==1) || (t1==z-1 && v[xx]==0))
	{
		ans+=4*t2;
		LRcnt[i].upd(1+x/z,-1);
	}
	int m=z/2;
	if(xx<x+m)
	{
		cal(x,m,i+1,LR,LRcnt,UDcnt,v,xx);
	}
	else
	{
		cal(x+m,m,i+1,LR,LRcnt,UDcnt,v,xx);
	}
}
int main() {
	int n,q;
	scanf("%d%d",&n,&q);
	fup(i,0,n-1,1)
	{
		LRcnt.pb(FenwickTree(1<<i));
		UDcnt.pb(FenwickTree(1<<i));
		fup(j,1,1<<i,1)
		{
			LRcnt[i].upd(j,1);
			UDcnt[i].upd(j,1);
		}
	}
	FenwickTree LR(1<<n),UD(1<<n);
	Vi lr((1<<n)+1),ud((1<<n)+1);
	while(q--)
	{
		int o,x;
		scanf("%d%d",&o,&x);
		Vi &v= o?ud:lr;
		FenwickTree &Tree=o?UD:LR;
		auto &T1=o?UDcnt:LRcnt, &T2=o?LRcnt:UDcnt;
		int t=v[x];
		v[x]^=1;
		Tree.upd(x,v[x]-t);
		cal(1,1<<n,0,Tree,T1,T2,v,x);
		printf("%lld\n",ans);
	}
}

Compilation message (stderr)

collecting.cpp: In function 'int main()':
collecting.cpp:120:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&q);
  ~~~~~^~~~~~~~~~~~~~
collecting.cpp:136:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&o,&x);
   ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70