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답안 #256678

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
256678 2020-08-03T06:26:02 Z daniel920712 가로등 (APIO19_street_lamps) C++14
20 / 100
 582 ms 98424 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[2000005];
int now=1;
char temp[15];
char all[300005];
int con[105][105]={0};
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(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);
        }

        if(r2<=(Node[here].l+Node[here].r)/2) cha(l1,r1,l2,r2,con,Node[here].nxl);
        else if(l2>(Node[here].l+Node[here].r)/2) cha(l1,r1,l2,r2,con,Node[here].nxr);
        else
        {
            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].nxt==-1)
        {
            Node[here].nxt=now++;
            build(0,300000,-2,Node[here].nxt);
        }
        if(Node[here].l==l1&&Node[here].r==r1)
        {
            cha(l1,r1,l2,r2,con,Node[here].nxt);
            return;
        }
        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);
        }
        if(r1<=(Node[here].l+Node[here].r)/2) cha(l1,r1,l2,r2,con,Node[here].nxl);
        else if(l1>(Node[here].l+Node[here].r)/2) cha(l1,r1,l2,r2,con,Node[here].nxr);
        else
        {
            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 N,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(0,300000,-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));

                //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
        {
            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:115:13: 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:115:33: 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:115:35: 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:115:43: 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:115:49: 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:116:10: 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:117:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",all+1);
     ~~~~~^~~~~~~~~~~~
street_lamps.cpp:143:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",temp);
         ~~~~~^~~~~~~~~~~
street_lamps.cpp:146:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&where);
             ~~~~~^~~~~~~~~~~~~
street_lamps.cpp:190:18: 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 1 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 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 328 ms 1600 KB Output is correct
2 Correct 346 ms 2084 KB Output is correct
3 Correct 582 ms 11512 KB Output is correct
4 Runtime error 108 ms 98424 KB Execution killed with signal 11 (could be triggered by violating memory limits)
5 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 3 ms 384 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 896 KB Output is correct
2 Correct 2 ms 1024 KB Output is correct
3 Correct 2 ms 1152 KB Output is correct
4 Correct 2 ms 1280 KB Output is correct
5 Runtime error 111 ms 98372 KB Execution killed with signal 11 (could be triggered by violating memory limits)
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 328 ms 1600 KB Output is correct
9 Correct 346 ms 2084 KB Output is correct
10 Correct 582 ms 11512 KB Output is correct
11 Runtime error 108 ms 98424 KB Execution killed with signal 11 (could be triggered by violating memory limits)
12 Halted 0 ms 0 KB -