oj.uz

Submission #257925

# Submission time Handle Problem Language Result Execution time Memory
257925 2020-08-05T04:59:24 Z 문홍윤(#5065) Employment (JOI16_employment) C++17
10 / 100
 5000 ms 4808 KB 
#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define svec(x) sort(x.begin(), x.end())
using namespace std;
typedef pair<int, int> pii;
const int BUC=500;
const int MAXN=200000;
const int INF=1000000001;

int n, q, b;
int arr[MAXN+10];
vector<pair<pii, pii> > vc[MAXN/BUC+10];
vector<pii> sor[MAXN/BUC+10];
int ch[MAXN+100000];

void get_vc(int bnum){
    vc[bnum].clear();
    vc[bnum].eb(mp(0, 0), mp(0, 0));
    for(int i=max(bnum*BUC-1, 0); i<=(bnum+1)*BUC; i++)ch[i]=0;
    int num=0;
    for(int i=0; i<sor[bnum].size(); i++){
        int nw=sor[bnum][i].S;
        ch[nw]=1;
        num++;
        if(nw>0&&ch[nw-1])num--;
        if(ch[nw+1])num--;
        if(i==sor[bnum].size()-1||sor[bnum][i+1].F!=sor[bnum][i].F){
            vc[bnum].eb(mp(sor[bnum][i].F, num), mp(ch[bnum*BUC], ch[(bnum+1)*BUC-1]));
        }
    }
}

pair<int, pii> query2(int bnum, int num){
    for(int i=0; i<vc[bnum].size(); i++){
        if(i==vc[bnum].size()-1||vc[bnum][i+1].F.F>num)
            return mp(vc[bnum][i].F.S, vc[bnum][i].S);
    }
}

int query(int num){
    int on=0, ans=0;
    for(int i=0; i<=b; i++){
        pair<int, pii> tmp=query2(i, num);
        ans+=tmp.F;
        if(on&&tmp.S.F)ans--;
        on=tmp.S.S;
    }
    return ans;
}

void update(int bnum, int a, int b){
    bool flg=false;
    if(arr[a]<=b){
        for(int i=0; i<sor[bnum].size(); i++){
            if(sor[bnum][i]==mp(arr[a], a))flg=true;
            if(i==sor[bnum].size()-1||sor[bnum][i+1].F>=b){
                sor[bnum][i]=mp(b, a);
                break;
            }
            if(flg)swap(sor[bnum][i], sor[bnum][i+1]);
        }
    }
    else{
        for(int i=sor[bnum].size()-1; i>=0; i--){
            if(sor[bnum][i]==mp(arr[a], a))flg=true;
            if(i==0||sor[bnum][i-1].F<=b){
                sor[bnum][i]=mp(b, a);
                break;
            }
            if(flg)swap(sor[bnum][i], sor[bnum][i-1]);
        }
    }
    arr[a]=b;
    get_vc(bnum);
}

int main(){
    scanf("%d %d", &n, &q);
    for(int i=0; i<n; i++){
        scanf("%d", &arr[i]);
        arr[i]=INF-arr[i];
    }
    b=(n-1)/BUC;
    for(int i=0; i<n; i++)sor[i/BUC].eb(arr[i], i);
    for(int i=0; i<=b; i++)svec(sor[i]);
    for(int i=0; i<=b; i++)get_vc(i);
    for(int i=1; i<=q; i++){
        int qnum;
        scanf("%d", &qnum);
        if(qnum==1){
            int a;
            scanf("%d", &a);
            printf("%d\n", query(INF-a));
        }
        else{
            int a, b;
            scanf("%d %d", &a, &b);
            a--;
            update(a/BUC, a, INF-b);
        }
    }
}

Compilation message

employment.cpp: In function 'void get_vc(int)':
employment.cpp:24:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<sor[bnum].size(); i++){
                  ~^~~~~~~~~~~~~~~~~
employment.cpp:30:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i==sor[bnum].size()-1||sor[bnum][i+1].F!=sor[bnum][i].F){
            ~^~~~~~~~~~~~~~~~~~~~
employment.cpp: In function 'std::pair<int, std::pair<int, int> > query2(int, int)':
employment.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<vc[bnum].size(); i++){
                  ~^~~~~~~~~~~~~~~~
employment.cpp:38:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i==vc[bnum].size()-1||vc[bnum][i+1].F.F>num)
            ~^~~~~~~~~~~~~~~~~~~
employment.cpp: In function 'void update(int, int, int)':
employment.cpp:57:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<sor[bnum].size(); i++){
                      ~^~~~~~~~~~~~~~~~~
employment.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(i==sor[bnum].size()-1||sor[bnum][i+1].F>=b){
                ~^~~~~~~~~~~~~~~~~~~~
employment.cpp: In function 'std::pair<int, std::pair<int, int> > query2(int, int)':
employment.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
employment.cpp: In function 'int main()':
employment.cpp:81:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~~
employment.cpp:83:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &arr[i]);
         ~~~~~^~~~~~~~~~~~~~~
employment.cpp:92:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &qnum);
         ~~~~~^~~~~~~~~~~~~
employment.cpp:95:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a);
             ~~~~~^~~~~~~~~~
employment.cpp:100:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d", &a, &b);
             ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 6 ms 384 KB Output is correct
8 Correct 9 ms 384 KB Output is correct
9 Correct 10 ms 384 KB Output is correct
10 Correct 11 ms 384 KB Output is correct
11 Correct 10 ms 384 KB Output is correct
12 Correct 10 ms 384 KB Output is correct
13 Correct 10 ms 384 KB Output is correct
14 Correct 11 ms 384 KB Output is correct
15 Correct 10 ms 384 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 130 ms 816 KB Output is correct
5 Correct 490 ms 1656 KB Output is correct
6 Correct 1146 ms 2048 KB Output is correct
7 Correct 2901 ms 3332 KB Output is correct
8 Correct 4166 ms 3740 KB Output is correct
9 Execution timed out 5036 ms 4808 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 6 ms 384 KB Output is correct
8 Correct 9 ms 384 KB Output is correct
9 Correct 10 ms 384 KB Output is correct
10 Correct 11 ms 384 KB Output is correct
11 Correct 10 ms 384 KB Output is correct
12 Correct 10 ms 384 KB Output is correct
13 Correct 10 ms 384 KB Output is correct
14 Correct 11 ms 384 KB Output is correct
15 Correct 10 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 6 ms 512 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 130 ms 816 KB Output is correct
20 Correct 490 ms 1656 KB Output is correct
21 Correct 1146 ms 2048 KB Output is correct
22 Correct 2901 ms 3332 KB Output is correct
23 Correct 4166 ms 3740 KB Output is correct
24 Execution timed out 5036 ms 4808 KB Time limit exceeded
25 Halted 0 ms 0 KB -