oj.uz

Submission #257929

# Submission time Handle Problem Language Result Execution time Memory
257929 2020-08-05T05:08:45 Z 문홍윤(#5065) Employment (JOI16_employment) C++17
10 / 100
 5000 ms 8020 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+100000];
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){
    int tmp=lower_bound(vc[bnum].begin(), vc[bnum].end(), mp(mp(num, INF), mp(1, 1)))-vc[bnum].begin()-1;
    return mp(vc[bnum][tmp].F.S, vc[bnum][tmp].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 'void update(int, int, int)':
employment.cpp:55:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<sor[bnum].size(); i++){
                      ~^~~~~~~~~~~~~~~~~
employment.cpp:57:17: 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 'int main()':
employment.cpp:79:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~~
employment.cpp:81:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &arr[i]);
         ~~~~~^~~~~~~~~~~~~~~
employment.cpp:90:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &qnum);
         ~~~~~^~~~~~~~~~~~~
employment.cpp:93:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a);
             ~~~~~^~~~~~~~~~
employment.cpp:98:18: 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 0 ms 384 KB Output is correct
3 Correct 0 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 6 ms 384 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 9 ms 384 KB Output is correct
11 Correct 9 ms 384 KB Output is correct
12 Correct 9 ms 384 KB Output is correct
13 Correct 9 ms 384 KB Output is correct
14 Correct 9 ms 384 KB Output is correct
15 Correct 11 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 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 53 ms 768 KB Output is correct
5 Correct 154 ms 1656 KB Output is correct
6 Correct 336 ms 1912 KB Output is correct
7 Correct 802 ms 3296 KB Output is correct
8 Correct 1237 ms 3960 KB Output is correct
9 Correct 3017 ms 5308 KB Output is correct
10 Correct 2699 ms 7256 KB Output is correct
11 Correct 4352 ms 6908 KB Output is correct
12 Execution timed out 5067 ms 8020 KB Time limit exceeded
13 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 0 ms 384 KB Output is correct
3 Correct 0 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 6 ms 384 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 9 ms 384 KB Output is correct
11 Correct 9 ms 384 KB Output is correct
12 Correct 9 ms 384 KB Output is correct
13 Correct 9 ms 384 KB Output is correct
14 Correct 9 ms 384 KB Output is correct
15 Correct 11 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 53 ms 768 KB Output is correct
20 Correct 154 ms 1656 KB Output is correct
21 Correct 336 ms 1912 KB Output is correct
22 Correct 802 ms 3296 KB Output is correct
23 Correct 1237 ms 3960 KB Output is correct
24 Correct 3017 ms 5308 KB Output is correct
25 Correct 2699 ms 7256 KB Output is correct
26 Correct 4352 ms 6908 KB Output is correct
27 Execution timed out 5067 ms 8020 KB Time limit exceeded
28 Halted 0 ms 0 KB -