oj.uz

Submission #257374

# Submission time Handle Problem Language Result Execution time Memory
257374 2020-08-04T07:39:57 Z daniel920712 Street Lamps (APIO19_street_lamps) C++14
80 / 100
 1020 ms 229496 KB 
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <set>
#include <utility>

using namespace std;
set < pair < int , int > > how;
struct A
{
    int l,r;
    int nxl,nxr,nxt;
    int con;
}Node[80000005];
int now=1;
char temp[15];
char all[300005];
int N;
int Find(int x,int y,int here)
{
    if(here<0) return 0;
    int t;
    if(Node[here].nxt==-2)
    {
        t=Node[here].con;
        if(Node[here].l==y&&Node[here].r==y) return t;
        else if(y<=(Node[here].l+Node[here].r)/2) t+=Find(x,y,Node[here].nxl);
        else t+=Find(x,y,Node[here].nxr);
    }
    else
    {
        t=Node[here].con;
        t+=Find(x,y,Node[here].nxt);
        if(Node[here].l==x&&Node[here].r==x) return t;
        else if(x<=(Node[here].l+Node[here].r)/2) t+=Find(x,y,Node[here].nxl);
        else t+=Find(x,y,Node[here].nxr);
    }
    return t;
}
void build(int l,int r,int con,int here)
{
    Node[here].l=l;
    Node[here].r=r;
    Node[here].nxt=con;
    Node[here].nxl=-1;
    Node[here].nxr=-1;
    Node[here].con=0;
}
void cha(int l1,int r1,int l2,int r2,int con,int here)
{
    int t;
    if(Node[here].nxt==-2)
    {
        if(Node[here].l==l2&&Node[here].r==r2)
        {
            Node[here].con+=con;
            return ;
        }
        if(r2<=(Node[here].l+Node[here].r)/2)
        {
            if(Node[here].nxl==-1)
            {
                Node[here].nxl=now++;
                build(Node[here].l,(Node[here].l+Node[here].r)/2,-2,Node[here].nxl);
            }
            cha(l1,r1,l2,r2,con,Node[here].nxl);
        }
        else if(l2>(Node[here].l+Node[here].r)/2)
        {
            if(Node[here].nxr==-1)
            {
                Node[here].nxr=now++;
                build((Node[here].l+Node[here].r)/2+1,Node[here].r,-2,Node[here].nxr);
            }
            cha(l1,r1,l2,r2,con,Node[here].nxr);
        }
        else
        {
            if(Node[here].nxl==-1)
            {
                Node[here].nxl=now++;
                build(Node[here].l,(Node[here].l+Node[here].r)/2,-2,Node[here].nxl);
            }
            if(Node[here].nxr==-1)
            {
                Node[here].nxr=now++;
                build((Node[here].l+Node[here].r)/2+1,Node[here].r,-2,Node[here].nxr);
            }
            cha(l1,r1,l2,(Node[here].l+Node[here].r)/2,con,Node[here].nxl);
            cha(l1,r1,(Node[here].l+Node[here].r)/2+1,r2,con,Node[here].nxr);
        }
    }
    else
    {
        if(Node[here].l==l1&&Node[here].r==r1)
        {
            if(Node[here].nxt==-1)
            {
                Node[here].nxt=now++;
                build(0,N+1,-2,Node[here].nxt);
            }
            cha(l1,r1,l2,r2,con,Node[here].nxt);
            return;
        }
        if(r1<=(Node[here].l+Node[here].r)/2)
        {
            if(Node[here].nxl==-1)
            {
                Node[here].nxl=now++;
                build(Node[here].l,(Node[here].l+Node[here].r)/2,-1,Node[here].nxl);
            }
            cha(l1,r1,l2,r2,con,Node[here].nxl);
        }
        else if(l1>(Node[here].l+Node[here].r)/2)
        {
            if(Node[here].nxr==-1)
            {
                Node[here].nxr=now++;
                build((Node[here].l+Node[here].r)/2+1,Node[here].r,-1,Node[here].nxr);
            }
            cha(l1,r1,l2,r2,con,Node[here].nxr);
        }
        else
        {
            if(Node[here].nxl==-1)
            {
                Node[here].nxl=now++;
                build(Node[here].l,(Node[here].l+Node[here].r)/2,-1,Node[here].nxl);
            }
            if(Node[here].nxr==-1)
            {
                Node[here].nxr=now++;
                build((Node[here].l+Node[here].r)/2+1,Node[here].r,-1,Node[here].nxr);
            }
            cha(l1,(Node[here].l+Node[here].r)/2,l2,r2,con,Node[here].nxl);
            cha((Node[here].l+Node[here].r)/2+1,r1,l2,r2,con,Node[here].nxr);
        }
    }
}
int main()
{
    //freopen("17","rt",stdin);
    int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
    scanf("%d %d",&N,&M);
    scanf("%s",all+1);
    build(0,N+1,-1,0);
    l=1;
    r=0;
    for(i=1;i<=N;i++)
    {
        if(all[i]=='1') r=i;
        else
        {
            if(r>=l)
            {
                how.insert(make_pair(l,r));
                cha(l,r+1,l,r+1,M,0);
            }
            l=i+1;
            r=i;
        }
    }
    if(r>=l)
    {
        how.insert(make_pair(l,r));
        cha(l,r+1,l,r+1,M,0);
    }

    for(i=1;i<=M;i++)
    {
        scanf("%s",temp);
        if(temp[0]=='t')
        {
            scanf("%d",&where);
            if(all[where]=='0')
            {
                //printf("aa\n");
                if(how.empty())
                {
                    cha(where,where,where+1,where+1,M-i,0);
                    how.insert(make_pair(where,where));
                    continue;
                }
                auto a=how.lower_bound(make_pair(where+1,where));
                auto b=prev(a);
                //printf("aa\n");
                r1=where;
                l2=where+1;
                if(a==how.end()||all[where+1]=='0') r2=where+1;
                else r2=a->second+1;
                if(a==how.begin()||all[where-1]=='0') l1=where;
                else l1=b->first;
                if(r2!=where+1) how.erase(a);
                if(l1!=where) how.erase(b);
                if(r2-1>=l1) how.insert(make_pair(l1,r2-1));
                //printf("%d %d %d %d\n",l1,r1,l2,r2);
                cha(l1,r1,l2,r2,M-i,0);
            }
            else
            {
                auto a=prev(how.lower_bound(make_pair(where+1,where)));
                l1=a->first;
                r1=where;
                l2=where+1;
                r2=a->second+1;
                how.erase(a);
                if(r1-1>=l1) how.insert(make_pair(l1,r1-1));
                if(r2-1>=l2) how.insert(make_pair(l2,r2-1));
                cha(l1,r1,l2,r2,i-M,0);
            }
            all[where]=(1-(all[where]-'0'))+'0';
        }
        else
        {
            scanf("%d %d",&l,&r);
            ok=1;
            if(how.lower_bound(make_pair(l+1,r))!=how.begin()&&prev(how.lower_bound(make_pair(l+1,r)))->first<=l&&prev(how.lower_bound(make_pair(l+1,r)))->second>=r-1) ok=1;
            else ok=0;
            printf("%d\n",max(Find(l,r,0)-(M-i)*ok,0));
        }

    }
    return 0;
}

Compilation message

street_lamps.cpp: In function 'void cha(int, int, int, int, int, int)':
street_lamps.cpp:51:9: warning: unused variable 't' [-Wunused-variable]
     int t;
         ^
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:143:11: warning: unused variable 't' [-Wunused-variable]
     int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
           ^
street_lamps.cpp:143:31: warning: unused variable 'j' [-Wunused-variable]
     int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                               ^
street_lamps.cpp:143:33: warning: unused variable 'k' [-Wunused-variable]
     int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                 ^
street_lamps.cpp:143:41: warning: unused variable 'ok1' [-Wunused-variable]
     int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                         ^~~
street_lamps.cpp:143:47: warning: unused variable 'ok2' [-Wunused-variable]
     int M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                               ^~~
street_lamps.cpp:144:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&N,&M);
     ~~~~~^~~~~~~~~~~~~~~
street_lamps.cpp:145:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",all+1);
     ~~~~~^~~~~~~~~~~~
street_lamps.cpp:171:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",temp);
         ~~~~~^~~~~~~~~~~
street_lamps.cpp:174:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&where);
             ~~~~~^~~~~~~~~~~~~
street_lamps.cpp:215:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d",&l,&r);
             ~~~~~^~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 258 ms 1528 KB Output is correct
2 Correct 275 ms 1656 KB Output is correct
3 Correct 421 ms 6392 KB Output is correct
4 Correct 937 ms 131932 KB Output is correct
5 Correct 1010 ms 179832 KB Output is correct
6 Correct 879 ms 139896 KB Output is correct
7 Correct 153 ms 1272 KB Output is correct
8 Correct 172 ms 2680 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 768 KB Output is correct
2 Correct 2 ms 768 KB Output is correct
3 Correct 2 ms 768 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 981 ms 229496 KB Output is correct
6 Correct 1010 ms 217848 KB Output is correct
7 Correct 888 ms 184312 KB Output is correct
8 Correct 181 ms 8568 KB Output is correct
9 Correct 133 ms 4092 KB Output is correct
10 Correct 141 ms 4344 KB Output is correct
11 Correct 143 ms 4600 KB Output is correct
12 Correct 155 ms 7160 KB Output is correct
13 Correct 177 ms 8568 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 2 ms 640 KB Output is correct
4 Correct 2 ms 640 KB Output is correct
5 Correct 737 ms 87312 KB Output is correct
6 Correct 812 ms 114596 KB Output is correct
7 Correct 919 ms 139128 KB Output is correct
8 Correct 1020 ms 165896 KB Output is correct
9 Correct 237 ms 1016 KB Output is correct
10 Correct 198 ms 504 KB Output is correct
11 Correct 234 ms 916 KB Output is correct
12 Correct 200 ms 496 KB Output is correct
13 Correct 236 ms 1016 KB Output is correct
14 Correct 199 ms 504 KB Output is correct
15 Correct 158 ms 1272 KB Output is correct
16 Correct 186 ms 2808 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 258 ms 1528 KB Output is correct
9 Correct 275 ms 1656 KB Output is correct
10 Correct 421 ms 6392 KB Output is correct
11 Correct 937 ms 131932 KB Output is correct
12 Correct 1010 ms 179832 KB Output is correct
13 Correct 879 ms 139896 KB Output is correct
14 Correct 153 ms 1272 KB Output is correct
15 Correct 172 ms 2680 KB Output is correct
16 Correct 2 ms 768 KB Output is correct
17 Correct 2 ms 768 KB Output is correct
18 Correct 2 ms 768 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 981 ms 229496 KB Output is correct
21 Correct 1010 ms 217848 KB Output is correct
22 Correct 888 ms 184312 KB Output is correct
23 Correct 181 ms 8568 KB Output is correct
24 Correct 133 ms 4092 KB Output is correct
25 Correct 141 ms 4344 KB Output is correct
26 Correct 143 ms 4600 KB Output is correct
27 Correct 155 ms 7160 KB Output is correct
28 Correct 177 ms 8568 KB Output is correct
29 Correct 1 ms 512 KB Output is correct
30 Correct 2 ms 640 KB Output is correct
31 Correct 2 ms 640 KB Output is correct
32 Correct 2 ms 640 KB Output is correct
33 Correct 737 ms 87312 KB Output is correct
34 Correct 812 ms 114596 KB Output is correct
35 Correct 919 ms 139128 KB Output is correct
36 Correct 1020 ms 165896 KB Output is correct
37 Correct 237 ms 1016 KB Output is correct
38 Correct 198 ms 504 KB Output is correct
39 Correct 234 ms 916 KB Output is correct
40 Correct 200 ms 496 KB Output is correct
41 Correct 236 ms 1016 KB Output is correct
42 Correct 199 ms 504 KB Output is correct
43 Correct 158 ms 1272 KB Output is correct
44 Correct 186 ms 2808 KB Output is correct
45 Incorrect 119 ms 2828 KB Output isn't correct
46 Halted 0 ms 0 KB -