oj.uz

Submission #741892

# Submission time Handle Problem Language Result Execution time Memory
741892 2023-05-15T03:38:53 Z jamezzz Modern Machine (JOI23_ho_t5) C++17
25 / 100
 3000 ms 58584 KB 
#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb push_back
#define INF 2023456789
#define all(x) x.begin(),x.end()
typedef pair<int,int> ii;
typedef long long ll;

#define maxn 120005

int n,m,q,c[maxn],a[maxn];

struct node{
	int s,e,m,v,lz;
	node *l,*r;
	node(int _s,int _e){
		s=_s,e=_e,m=(s+e)>>1,lz=-1;
		if(s!=e){
			l=new node(s,m),r=new node(m+1,e);
			v=l->v+r->v;
		}
		else v=c[s];
	}
	void ppo(){
		if(lz!=-1){
			v=(e-s+1)*lz;
			if(s!=e){
				l->lz=lz;
				r->lz=lz;
			}
			lz=-1;
		}
	}
	void up(int x,int y,int nv){
		if(s==x&&e==y){lz=nv;return;}
		if(y<=m)l->up(x,y,nv);
		else if(x>m)r->up(x,y,nv);
		else l->up(x,m,nv),r->up(m+1,y,nv);
		l->ppo(),r->ppo();
		v=l->v+r->v;
	}
	int qry(int x,int y){
		if(x>y)return 0;
		ppo();
		if(s==x&&e==y)return v;
		if(y<=m)return l->qry(x,y);
		if(x>m)return r->qry(x,y);
		return l->qry(x,m)+r->qry(m+1,y);
	}
	int findR(int num){
		ppo();
		if(s==e){
			if(num==1&&v==0)return s;
			else return -1;
		}
		l->ppo(),r->ppo();
		int lnum=l->e-l->s+1-l->v;
		if(lnum>=num)return l->findR(num);
		else return r->findR(num-lnum);
	}
	int findB(int num){
		ppo();
		if(s==e){
			if(num==1&&v==1)return s;
			else return -1;
		}
		l->ppo(),r->ppo();
		if(l->v>=num)return l->findB(num);
		else return r->findB(num-l->v);
	}
}*rt;

int main(){
	sf("%d%d",&n,&m);
	for(int i=1;i<=n;++i){
		char ch;sf(" %c",&ch);
		c[i]=(ch=='B');
	}
	for(int i=1;i<=m;++i)sf("%d",&a[i]);
	sf("%d",&q);
	for(int _=0;_<q;++_){
		int l,r;sf("%d%d",&l,&r);
		rt=new node(1,n);
		for(int i=l;i<=r;++i){
			rt->up(a[i],a[i],0);
			int lv=a[i]-1-rt->qry(1,a[i]-1);//number of R
			int rv=rt->qry(a[i]+1,n);//number of B
			if(rv<=lv){//the rv-th R to n become B
				int x=lv-rv+1;
				int p=rt->findR(x);
				if(p==-1)p=a[i];
				rt->up(p,n,1);
			}
			else{//1 to the lv+1-th B become R
				int x=rt->qry(1,a[i])+lv+1;
				int p=rt->findB(x);
				rt->up(1,p,0);
			}
		}
		pf("%d\n",n-rt->qry(1,n));
	}
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:79:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |  sf("%d%d",&n,&m);
      |    ^
Main.cpp:81:13: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |   char ch;sf(" %c",&ch);
      |             ^
Main.cpp:84:25: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |  for(int i=1;i<=m;++i)sf("%d",&a[i]);
      |                         ^
Main.cpp:85:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |  sf("%d",&q);
      |    ^
Main.cpp:87:13: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |   int l,r;sf("%d%d",&l,&r);
      |             ^

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 4 ms 1040 KB Output is correct
11 Correct 4 ms 980 KB Output is correct
12 Correct 6 ms 980 KB Output is correct
13 Correct 5 ms 1024 KB Output is correct
14 Correct 5 ms 980 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 4 ms 1040 KB Output is correct
11 Correct 4 ms 980 KB Output is correct
12 Correct 6 ms 980 KB Output is correct
13 Correct 5 ms 1024 KB Output is correct
14 Correct 5 ms 980 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 339 ms 58196 KB Output is correct
19 Correct 450 ms 58108 KB Output is correct
20 Correct 734 ms 58320 KB Output is correct
21 Correct 906 ms 58584 KB Output is correct
22 Correct 432 ms 58032 KB Output is correct
23 Correct 426 ms 58340 KB Output is correct
24 Correct 379 ms 57808 KB Output is correct
25 Correct 376 ms 58060 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 3059 ms 1188 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 3059 ms 1188 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 3059 ms 1188 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #7
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 4 ms 1040 KB Output is correct
11 Correct 4 ms 980 KB Output is correct
12 Correct 6 ms 980 KB Output is correct
13 Correct 5 ms 1024 KB Output is correct
14 Correct 5 ms 980 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 339 ms 58196 KB Output is correct
19 Correct 450 ms 58108 KB Output is correct
20 Correct 734 ms 58320 KB Output is correct
21 Correct 906 ms 58584 KB Output is correct
22 Correct 432 ms 58032 KB Output is correct
23 Correct 426 ms 58340 KB Output is correct
24 Correct 379 ms 57808 KB Output is correct
25 Correct 376 ms 58060 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Execution timed out 3059 ms 1188 KB Time limit exceeded
28 Halted 0 ms 0 KB -