oj.uz

Submission #257953

# Submission time Handle Problem Language Result Execution time Memory
257953 2020-08-05T06:01:04 Z 반딧불(#5055) Employment (JOI16_employment) C++17
100 / 100
 293 ms 9212 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, q, k;
int arr[200002];
int qt[200002], qa[200002], qb[200002];
vector<int> renumberVec;

int tree[400002];
int findTree(int x){
    int ret = 0;
    while(x){
        ret += tree[x];
        x -= x & (-x);
    }
    return ret;
}
void update(int l, int x){
    while(l <= k){
        tree[l] += x;
        l += l & (-l);
    }
}
void update(int l, int r, int x){
    if(l>r) return;
    update(l, x);
    update(r+1, -x);
}

void initializeTree(){
    vector<pair<int, int> > vec;
    vector<int> used (n+2, 0);
    int cnt = 0;

    for(int i=1; i<=n; i++){
        vec.push_back(make_pair(arr[i], i));
    }
    sort(vec.begin(), vec.end());
    reverse(vec.begin(), vec.end());

    int pnt = 0;
    for(int i=k; i>=1; i--){
        while(pnt < n && vec[pnt].first == i){
            int x = vec[pnt].second;
            if(used[x-1] && used[x+1]) cnt--;
            else if(!used[x-1] && !used[x+1]) cnt++;
            used[x] = 1;
            pnt++;
        }
        update(i, i, cnt);
    }
}

int main(){
    scanf("%d %d", &n, &q);
    for(int i=1; i<=n; i++){
        scanf("%d", &arr[i]);
        renumberVec.push_back(arr[i]);
    }
    for(int i=1; i<=q; i++){
        scanf("%d %d", &qt[i], &qa[i]);
        if(qt[i] == 1) renumberVec.push_back(qa[i]);
        else{
            scanf("%d", &qb[i]);
            renumberVec.push_back(qb[i]);
        }
    }
    sort(renumberVec.begin(), renumberVec.end());
    renumberVec.erase(unique(renumberVec.begin(), renumberVec.end()), renumberVec.end());
    k = (int)renumberVec.size();

    for(int i=1; i<=n; i++){
        arr[i] = lower_bound(renumberVec.begin(), renumberVec.end(), arr[i]) - renumberVec.begin() + 1;
    }
    for(int i=1; i<=q; i++){
        if(qt[i] == 1) qa[i] = lower_bound(renumberVec.begin(), renumberVec.end(), qa[i]) - renumberVec.begin() + 1;
        else qb[i] = lower_bound(renumberVec.begin(), renumberVec.end(), qb[i]) - renumberVec.begin() + 1;
    }

    initializeTree();

    for(int i=1; i<=q; i++){
        if(qt[i] == 1){
            printf("%d\n", findTree(qa[i]));
            continue;
        }

        int x = qa[i], y = qb[i];
        if(arr[x] >= arr[x+1] && arr[x] >= arr[x-1]){
            update(max(arr[x-1], arr[x+1])+1, arr[x], -1);
            update(1, min(arr[x-1], arr[x+1]), 1);
        }
        else{
            update(1, min({arr[x], arr[x-1], arr[x+1]}), 1);
        }

        arr[x] = y;

        if(arr[x] >= arr[x+1] && arr[x] >= arr[x-1]){
            update(max(arr[x-1], arr[x+1])+1, arr[x], 1);
            update(1, min(arr[x-1], arr[x+1]), -1);
        }
        else{
            update(1, min({arr[x], arr[x-1], arr[x+1]}), -1);
        }
    }
}

Compilation message

employment.cpp: In function 'int main()':
employment.cpp:58:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~~
employment.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &arr[i]);
         ~~~~~^~~~~~~~~~~~~~~
employment.cpp:64:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &qt[i], &qa[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
employment.cpp:67:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &qb[i]);
             ~~~~~^~~~~~~~~~~~~~

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 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 1 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 26 ms 1024 KB Output is correct
5 Correct 37 ms 1780 KB Output is correct
6 Correct 57 ms 2296 KB Output is correct
7 Correct 92 ms 3692 KB Output is correct
8 Correct 117 ms 4096 KB Output is correct
9 Correct 197 ms 7012 KB Output is correct
10 Correct 181 ms 6884 KB Output is correct
11 Correct 225 ms 7616 KB Output is correct
12 Correct 258 ms 8160 KB Output is correct
13 Correct 258 ms 8288 KB Output is correct
14 Correct 253 ms 8036 KB Output is correct
15 Correct 286 ms 8168 KB Output is correct
16 Correct 255 ms 8288 KB Output is correct
17 Correct 258 ms 8292 KB Output is correct
18 Correct 256 ms 8288 KB Output is correct
19 Correct 262 ms 8292 KB Output is correct
20 Correct 258 ms 8296 KB Output is correct

Subtask #3
60.0 / 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 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 1 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 3 ms 512 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 3 ms 512 KB Output is correct
19 Correct 26 ms 1024 KB Output is correct
20 Correct 37 ms 1780 KB Output is correct
21 Correct 57 ms 2296 KB Output is correct
22 Correct 92 ms 3692 KB Output is correct
23 Correct 117 ms 4096 KB Output is correct
24 Correct 197 ms 7012 KB Output is correct
25 Correct 181 ms 6884 KB Output is correct
26 Correct 225 ms 7616 KB Output is correct
27 Correct 258 ms 8160 KB Output is correct
28 Correct 258 ms 8288 KB Output is correct
29 Correct 253 ms 8036 KB Output is correct
30 Correct 286 ms 8168 KB Output is correct
31 Correct 255 ms 8288 KB Output is correct
32 Correct 258 ms 8292 KB Output is correct
33 Correct 256 ms 8288 KB Output is correct
34 Correct 262 ms 8292 KB Output is correct
35 Correct 258 ms 8296 KB Output is correct
36 Correct 2 ms 512 KB Output is correct
37 Correct 3 ms 512 KB Output is correct
38 Correct 3 ms 512 KB Output is correct
39 Correct 24 ms 1204 KB Output is correct
40 Correct 37 ms 1620 KB Output is correct
41 Correct 66 ms 2416 KB Output is correct
42 Correct 95 ms 3852 KB Output is correct
43 Correct 133 ms 4352 KB Output is correct
44 Correct 235 ms 7908 KB Output is correct
45 Correct 192 ms 7140 KB Output is correct
46 Correct 209 ms 7524 KB Output is correct
47 Correct 276 ms 8928 KB Output is correct
48 Correct 277 ms 8928 KB Output is correct
49 Correct 288 ms 9188 KB Output is correct
50 Correct 272 ms 8800 KB Output is correct
51 Correct 280 ms 9060 KB Output is correct
52 Correct 285 ms 9060 KB Output is correct
53 Correct 293 ms 9056 KB Output is correct
54 Correct 289 ms 9056 KB Output is correct
55 Correct 285 ms 9212 KB Output is correct