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Submission #1082812

# Submission time Handle Problem Language Result Execution time Memory
1082812 2024-09-01T16:30:50 Z DeathIsAwe Examination (JOI19_examination) C++17
100 / 100
 373 ms 29204 KB 
#include <bits/stdc++.h>
using namespace std;
int segmenta[262144], segmentb[262144];
unordered_map<int,int> compressa, compressb;


void update(int x, int pos, int *segment) {
    pos += 131072;
    while (pos > 0) {
        segment[pos] += x; pos /= 2;
    }
}


int range(int a, int b, int *segment) {
    int val = 0;
    a += 131072; b += 131072;
    while (a <= b) {
        if (a%2 == 1) {val += segment[a++];}
        if (b%2 == 0) {val += segment[b--];}
        a/=2; b/=2;
    }
    return val;
}


void compress(vector<int> &arr, unordered_map<int,int> &compress) {
    sort(arr.begin(), arr.end());
    int count = 0; compress[arr[0]] = 0;
    for (int i=1;i<arr.size();i++) {
        if (arr[i] > arr[i-1]) {
            count++;
            compress[arr[i]] = count;
        }
    }
}


bool comp(vector<int> a, vector<int> b) {
    return a[2] > b[2];
}


void querycompress(vector<vector<int>> &q, vector<int> &arra, vector<int> &arrb) {
    int pos;
    for (int i=0;i<q.size();i++) {
        pos = lower_bound(arra.begin(), arra.end(), q[i][0]) - arra.begin();
        if (pos == arra.size()) {
            q[i][0] = compressa[arra[pos-1]] + 1;
        } else {
            q[i][0] = compressa[arra[pos]];
        }
        pos = lower_bound(arrb.begin(), arrb.end(), q[i][1]) - arrb.begin();
        if (pos == arrb.size()) {
            q[i][1] = compressb[arrb[pos-1]] + 1;
        } else {
            q[i][1] = compressb[arrb[pos]];
        }
    }
}


int main() {
    int n, q; cin >> n >> q;
    vector<vector<int>> ppl(n, vector<int>(3));
    vector<int> arra(n), arrb(n), ansvec(q), query(4);
    vector<vector<int>> aq, bq;
    for (int i=0;i<n;i++) {
        cin >> ppl[i][0] >> ppl[i][1];
        ppl[i][2] = ppl[i][0] + ppl[i][1];
        arra[i] = ppl[i][0]; arrb[i] = ppl[i][1];
    }
    for (int i=0;i<q;i++) {
        cin >> query[0] >> query[1] >> query[2]; query[3] = i;
        if (query[2] <= query[0] + query[1]) {
            aq.push_back(query);
        } else {
            bq.push_back(query);
        }
    }
    compress(arra, compressa); compress(arrb, compressb);


    for (int i=0;i<n;i++) {
        ppl[i][0] = compressa[ppl[i][0]];
        ppl[i][1] = compressb[ppl[i][1]];
    }
    querycompress(aq, arra, arrb); querycompress(bq, arra, arrb);


    for (int i=0;i<262144;i++) {segmentb[i] = 0;}
    sort(ppl.begin(), ppl.end(), greater<vector<int>>());
    sort(aq.begin(), aq.end(), greater<vector<int>>());
    int tracker = 0;
    for (int i=0;i<aq.size();i++) {
        while (tracker < n && ppl[tracker][0] >= aq[i][0]) {
            update(1, ppl[tracker][1], segmentb);
            tracker++;
        }
        ansvec[aq[i][3]] = range(aq[i][1], 131071, segmentb);
    }


    for (int i=0;i<262144;i++) {segmenta[i] = 0; segmentb[i] = 0;}
    sort(ppl.begin(), ppl.end(), comp);
    sort(bq.begin(), bq.end(), comp);
    tracker = 0;
    for (int i=0;i<bq.size();i++) {
        while (tracker < n && ppl[tracker][2] >= bq[i][2]) {
            update(1, ppl[tracker][1], segmentb);
            update(1, ppl[tracker][0], segmenta);
            tracker++;
        }
        ansvec[bq[i][3]] = range(bq[i][1], 131071, segmentb) - range(0, bq[i][0] - 1, segmenta);
    }
    for (int i: ansvec) {
        cout << i << '\n';
    }
}

Compilation message

examination.cpp: In function 'void compress(std::vector<int>&, std::unordered_map<int, int>&)':
examination.cpp:30:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i=1;i<arr.size();i++) {
      |                  ~^~~~~~~~~~~
examination.cpp: In function 'void querycompress(std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)':
examination.cpp:46:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for (int i=0;i<q.size();i++) {
      |                  ~^~~~~~~~~
examination.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         if (pos == arra.size()) {
      |             ~~~~^~~~~~~~~~~~~~
examination.cpp:54:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         if (pos == arrb.size()) {
      |             ~~~~^~~~~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:95:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for (int i=0;i<aq.size();i++) {
      |                  ~^~~~~~~~~~
examination.cpp:108:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |     for (int i=0;i<bq.size();i++) {
      |                  ~^~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 9 ms 3276 KB Output is correct
8 Correct 9 ms 3092 KB Output is correct
9 Correct 10 ms 3056 KB Output is correct
10 Correct 8 ms 2908 KB Output is correct
11 Correct 9 ms 2908 KB Output is correct
12 Correct 6 ms 2908 KB Output is correct
13 Correct 9 ms 3056 KB Output is correct
14 Correct 8 ms 3260 KB Output is correct
15 Correct 9 ms 3164 KB Output is correct
16 Correct 6 ms 2908 KB Output is correct
17 Correct 8 ms 3068 KB Output is correct
18 Correct 5 ms 2908 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 268 ms 22028 KB Output is correct
2 Correct 261 ms 21764 KB Output is correct
3 Correct 295 ms 21948 KB Output is correct
4 Correct 195 ms 18824 KB Output is correct
5 Correct 220 ms 18800 KB Output is correct
6 Correct 181 ms 15992 KB Output is correct
7 Correct 256 ms 22024 KB Output is correct
8 Correct 241 ms 21988 KB Output is correct
9 Correct 252 ms 21604 KB Output is correct
10 Correct 211 ms 18432 KB Output is correct
11 Correct 203 ms 18656 KB Output is correct
12 Correct 137 ms 15616 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 268 ms 22028 KB Output is correct
2 Correct 261 ms 21764 KB Output is correct
3 Correct 295 ms 21948 KB Output is correct
4 Correct 195 ms 18824 KB Output is correct
5 Correct 220 ms 18800 KB Output is correct
6 Correct 181 ms 15992 KB Output is correct
7 Correct 256 ms 22024 KB Output is correct
8 Correct 241 ms 21988 KB Output is correct
9 Correct 252 ms 21604 KB Output is correct
10 Correct 211 ms 18432 KB Output is correct
11 Correct 203 ms 18656 KB Output is correct
12 Correct 137 ms 15616 KB Output is correct
13 Correct 297 ms 22236 KB Output is correct
14 Correct 267 ms 23296 KB Output is correct
15 Correct 247 ms 22788 KB Output is correct
16 Correct 252 ms 19900 KB Output is correct
17 Correct 261 ms 19740 KB Output is correct
18 Correct 171 ms 16352 KB Output is correct
19 Correct 302 ms 23224 KB Output is correct
20 Correct 275 ms 23228 KB Output is correct
21 Correct 312 ms 23380 KB Output is correct
22 Correct 231 ms 19288 KB Output is correct
23 Correct 210 ms 19300 KB Output is correct
24 Correct 139 ms 15840 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 9 ms 3276 KB Output is correct
8 Correct 9 ms 3092 KB Output is correct
9 Correct 10 ms 3056 KB Output is correct
10 Correct 8 ms 2908 KB Output is correct
11 Correct 9 ms 2908 KB Output is correct
12 Correct 6 ms 2908 KB Output is correct
13 Correct 9 ms 3056 KB Output is correct
14 Correct 8 ms 3260 KB Output is correct
15 Correct 9 ms 3164 KB Output is correct
16 Correct 6 ms 2908 KB Output is correct
17 Correct 8 ms 3068 KB Output is correct
18 Correct 5 ms 2908 KB Output is correct
19 Correct 268 ms 22028 KB Output is correct
20 Correct 261 ms 21764 KB Output is correct
21 Correct 295 ms 21948 KB Output is correct
22 Correct 195 ms 18824 KB Output is correct
23 Correct 220 ms 18800 KB Output is correct
24 Correct 181 ms 15992 KB Output is correct
25 Correct 256 ms 22024 KB Output is correct
26 Correct 241 ms 21988 KB Output is correct
27 Correct 252 ms 21604 KB Output is correct
28 Correct 211 ms 18432 KB Output is correct
29 Correct 203 ms 18656 KB Output is correct
30 Correct 137 ms 15616 KB Output is correct
31 Correct 297 ms 22236 KB Output is correct
32 Correct 267 ms 23296 KB Output is correct
33 Correct 247 ms 22788 KB Output is correct
34 Correct 252 ms 19900 KB Output is correct
35 Correct 261 ms 19740 KB Output is correct
36 Correct 171 ms 16352 KB Output is correct
37 Correct 302 ms 23224 KB Output is correct
38 Correct 275 ms 23228 KB Output is correct
39 Correct 312 ms 23380 KB Output is correct
40 Correct 231 ms 19288 KB Output is correct
41 Correct 210 ms 19300 KB Output is correct
42 Correct 139 ms 15840 KB Output is correct
43 Correct 352 ms 29192 KB Output is correct
44 Correct 370 ms 29204 KB Output is correct
45 Correct 330 ms 29184 KB Output is correct
46 Correct 288 ms 22932 KB Output is correct
47 Correct 281 ms 22968 KB Output is correct
48 Correct 217 ms 15976 KB Output is correct
49 Correct 333 ms 29076 KB Output is correct
50 Correct 373 ms 28924 KB Output is correct
51 Correct 367 ms 28928 KB Output is correct
52 Correct 305 ms 22972 KB Output is correct
53 Correct 251 ms 22020 KB Output is correct