Submission #713704

#	Time	Username	Problem	Language	Result	Execution time	Memory
713704		kkts	Bubble Sort 2 (JOI18_bubblesort2)	C++14	100 / 100	2305 ms	58868 KiB

bubblesort2

#include "bubblesort2.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
int lz[4 * N], t[4 * N];
void push(int u, int l, int r) {
    t[u] += lz[u];
    if(l != r) lz[2 * u] += lz[u], lz[2 * u + 1] += lz[u];
    lz[u] = 0;
}
void upd(int u, int st, int en, int l, int r, int v) {
    if(lz[u]) push(u, l, r);
    if(l > en || r < st) return;
    if(st <= l && r <= en) {
        lz[u] = v;
        push(u, l, r);
        return;
    }
    int mid = (l + r) / 2;
    upd(2 * u, st, en, l, mid, v); upd(2 * u + 1, st, en, mid + 1, r, v);
    t[u] = max(t[2 * u], t[2 * u + 1]);
}
std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
    vector<pair<int,int>> v;
    for(int i = 0; i < A.size(); i++) {
        v.push_back({A[i], i});
    }
    for(int i = 0; i < X.size(); i++) {
        v.push_back({V[i], X[i]});
    }
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(), v.end()), v.end());
    int n = v.size();
    for(int i = 1; i <= 4 * n; i++) t[i] = -N;
    for(int i = 0; i < A.size(); i++) {
        int x = lower_bound(v.begin(), v.end(), make_pair(A[i], i)) - v.begin() + 1;
        upd(1, x, x, 1, n, +N + i);
        upd(1, x + 1, n,1, n, -1);
    }
    vector<int> ans(X.size());
    for(int i = 0; i < X.size(); i++) {
        int x = lower_bound(v.begin(), v.end(), make_pair(A[X[i]], X[i])) - v.begin() + 1;
        upd(1, x, x, 1, n, -X[i] - N);
        upd(1, x + 1, n, 1, n, 1);

        A[X[i]] = V[i];
        x = lower_bound(v.begin(), v.end(), make_pair(A[X[i]], X[i])) - v.begin() + 1;
        upd(1, x, x, 1, n, +N + X[i]);
        upd(1, x + 1, n, 1, n, -1); // cur_ID - act_ID unda iyos max

        ans[i] = t[1];
    }
    return ans;
}

Compilation message (stderr)

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i = 0; i < A.size(); i++) {
      |                    ~~^~~~~~~~~~
bubblesort2.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i = 0; i < X.size(); i++) {
      |                    ~~^~~~~~~~~~
bubblesort2.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i = 0; i < A.size(); i++) {
      |                    ~~^~~~~~~~~~
bubblesort2.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int i = 0; i < X.size(); i++) {
      |                    ~~^~~~~~~~~~

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 22 / 22
• Subtask 4: 40 / 40