oj.uz

답안 #257371

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
257371 2020-08-04T07:25:29 Z daniel920712 가로등 (APIO19_street_lamps) C++14
60 / 100
 1077 ms 179960 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()
{
    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')
            {
                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));
                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:142:11: 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:142:31: 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:142:33: 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:142:41: 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:142:47: 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:143:10: 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:144:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",all+1);
     ~~~~~^~~~~~~~~~~~
street_lamps.cpp:170:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",temp);
         ~~~~~^~~~~~~~~~~
street_lamps.cpp:173:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&where);
             ~~~~~^~~~~~~~~~~~~
street_lamps.cpp:205:18: 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

# 결과 실행 시간 메모리 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 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 226 ms 1412 KB Output is correct
2 Correct 291 ms 1588 KB Output is correct
3 Correct 397 ms 6264 KB Output is correct
4 Correct 952 ms 131984 KB Output is correct
5 Correct 1077 ms 179960 KB Output is correct
6 Correct 939 ms 139728 KB Output is correct
7 Correct 161 ms 1272 KB Output is correct
8 Correct 180 ms 2684 KB Output is correct

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 75 ms 384 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 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 1 ms 640 KB Output is correct
5 Correct 736 ms 87380 KB Output is correct
6 Correct 814 ms 114296 KB Output is correct
7 Correct 933 ms 139396 KB Output is correct
8 Correct 899 ms 165988 KB Output is correct
9 Correct 224 ms 1016 KB Output is correct
10 Correct 189 ms 504 KB Output is correct
11 Correct 227 ms 1016 KB Output is correct
12 Correct 189 ms 504 KB Output is correct
13 Correct 232 ms 1016 KB Output is correct
14 Correct 194 ms 504 KB Output is correct
15 Correct 160 ms 1272 KB Output is correct
16 Correct 182 ms 2680 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 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 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 226 ms 1412 KB Output is correct
9 Correct 291 ms 1588 KB Output is correct
10 Correct 397 ms 6264 KB Output is correct
11 Correct 952 ms 131984 KB Output is correct
12 Correct 1077 ms 179960 KB Output is correct
13 Correct 939 ms 139728 KB Output is correct
14 Correct 161 ms 1272 KB Output is correct
15 Correct 180 ms 2684 KB Output is correct
16 Runtime error 75 ms 384 KB Execution killed with signal 11 (could be triggered by violating memory limits)
17 Halted 0 ms 0 KB -