Submission #471332

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
471332	2021-09-08 12:57:18	spike1236	Examination (JOI19_examination)	C++14	100 / 100	1883 ms	67248 KiB

examination

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#include <iostream>
#include <map>
#include <unordered_map>
#include <vector>
#include <algorithm>
#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2,fma")
using namespace std;
#define f first
#define s second
const int MAXN = 2e5 + 10;
pair <int, int> a[MAXN];
map <int, vector <vector <int> > > q;
vector <int> fw[MAXN], comp, comp2[MAXN];
int ans[MAXN];
int get_a(int v) {
    return lower_bound(comp.begin(), comp.end(), v) - comp.begin() + 1;
}
int get_b(int x, int y) {
    return lower_bound(comp2[x].begin(), comp2[x].end(), y) - comp2[x].begin() + 1;
}
void pre_upd(int x, int y) {
    for(int i = get_a(x); i <= comp.size(); i += i & -i) comp2[i].push_back(y);
}
void pre_get(int x, int y) {
 
 
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Compilation message (stderr)

examination.cpp: In function 'void pre_upd(int, int)':
examination.cpp:27:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = get_a(x); i <= comp.size(); i += i & -i) comp2[i].push_back(y);
      |                           ~~^~~~~~~~~~~~~~
examination.cpp: In function 'void upd(int, int, int)':
examination.cpp:35:29: 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 = get_a(x); i <= comp.size(); i += i & -i)
      |                           ~~^~~~~~~~~~~~~~
examination.cpp:36:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         for(int j = get_b(i, y); j <= comp2[i].size(); j += j & -j)
      |                                  ~~^~~~~~~~~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:79:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |     for(int i = 1; i <= comp.size(); ++i) {
      |                    ~~^~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57