oj.uz

Submission #256693

# Submission time Handle Problem Language Result Execution time Memory
256693 2020-08-03T06:45:17 Z daniel920712 Street Lamps (APIO19_street_lamps) C++14
20 / 100
 870 ms 484424 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[10000005];
int now=1;
char temp[15];
char all[300005];

int Find(int x,int y,int here)
{
    if(here==-1) return 0;
    int t;
    //printf("aa %d\n",Node[here].con);
    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);
    }
    //printf("%d %d %d %d\n",Node[here].l,Node[here].r,Node[here].nxt,t);
    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;
    //printf("%d %d %d %d %d %d\n",l1,r1,l2,r2,here,Node[here].nxt);
    if(Node[here].nxt==-2)
    {
        //return ;
        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(0,300000,-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("12","rt",stdin);
    //freopen("12.out","w+t",stdout);
    int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
    scanf("%d %d",&N,&M);
    //printf("%d %d\n",N,M);
    scanf("%s",all+1);
    build(0,300000,-1,0);
    l=1;
    r=0;
    //printf("aaaaa\n");
    for(i=1;i<=N;i++)
    {
        if(all[i]=='1') r=i;
        else
        {
            if(r>=l)
            {
                //printf("%d %d\n",l,r);
                how.insert(make_pair(l,r));
                cha(l,r+1,l,r+1,M,0);
                //printf("%d %d\n",l,r);
            }
            //if(now>=10000000) printf("%d\n",now);

            l=i+1;
            r=i;
        }
    }
    //printf("aaaaa\n");
    if(r>=l)
    {
        how.insert(make_pair(l,r));
        cha(l,r+1,l,r+1,M,0);
    }
    //printf("aaaaa\n");
    for(i=1;i<=M;i++)
    {
        scanf("%s",temp);
        if(temp[0]=='t')
        {

            scanf("%d",&where);

            if(all[where]=='0')
            {
                auto a=how.lower_bound(make_pair(where+1,where));
                auto b=prev(a);
                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("bb %d %d %d %d\n",l1,r1,l2,r2);
                //for(auto i:how) printf("aa %d %d\n",i.first,i.second);
                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;
                //printf("cc %d %d\n",a->first,a->second);
                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));

                //printf("cc %d %d %d %d\n",l1,r1,l2,r2);
                //for(auto i:how) printf("aa %d %d\n",i.first,i.second);
                //printf("%d %d %d %d\n",l1,r1,l2,r2);
                cha(l1,r1,l2,r2,i-M,0);
            }
            all[where]=(1-(all[where]-'0'))+'0';
        }
        else
        {
            //printf("bb\n");
            scanf("%d %d",&l,&r);
            ok=1;
            //if(how.lower_bound(make_pair(l+1,r))!=how.begin())
            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;
            //for(i=l;i<r;i++) if(all[i]=='0') 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:53:9: warning: unused variable 't' [-Wunused-variable]
     int t;
         ^
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:152:13: warning: unused variable 't' [-Wunused-variable]
     int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
             ^
street_lamps.cpp:152:33: warning: unused variable 'j' [-Wunused-variable]
     int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                 ^
street_lamps.cpp:152:35: warning: unused variable 'k' [-Wunused-variable]
     int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                   ^
street_lamps.cpp:152:43: warning: unused variable 'ok1' [-Wunused-variable]
     int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                           ^~~
street_lamps.cpp:152:49: warning: unused variable 'ok2' [-Wunused-variable]
     int N,M,t,l,r,l1,r1,l2,r2,i,j,k,where,ok1=0,ok2=0,ok;
                                                 ^~~
street_lamps.cpp:153:10: 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:155:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",all+1);
     ~~~~~^~~~~~~~~~~~
street_lamps.cpp:187:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",temp);
         ~~~~~^~~~~~~~~~~
street_lamps.cpp:191:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&where);
             ~~~~~^~~~~~~~~~~~~
street_lamps.cpp:237:18: 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 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 283 ms 1528 KB Output is correct
2 Correct 325 ms 1804 KB Output is correct
3 Correct 459 ms 7612 KB Output is correct
4 Correct 870 ms 131832 KB Output is correct
5 Runtime error 479 ms 484216 KB Execution killed with signal 11 (could be triggered by violating memory limits)
6 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 10 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 640 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 2 ms 768 KB Output is correct
4 Correct 2 ms 896 KB Output is correct
5 Correct 718 ms 87800 KB Output is correct
6 Runtime error 498 ms 484424 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -

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 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 283 ms 1528 KB Output is correct
9 Correct 325 ms 1804 KB Output is correct
10 Correct 459 ms 7612 KB Output is correct
11 Correct 870 ms 131832 KB Output is correct
12 Runtime error 479 ms 484216 KB Execution killed with signal 11 (could be triggered by violating memory limits)
13 Halted 0 ms 0 KB -