Submission #414928

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
414928	2021-05-31 10:42:07	Pro_ktmr	Event Hopping 2 (JOI21_event2)	C++17	100 / 100	268 ms	30620 KiB

event2

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#include <algorithm>
#include <iostream>
#include <set>
#include <vector>
using namespace std;
constexpr int MAX_N = 100'000;
constexpr int MAX_logN = 18;
constexpr int MAX_LR = 1'000'000'000;
int N, K;
int L[MAX_N], R[MAX_N];
vector<int> z;
vector<int> invL[MAX_N * 2 + 1];
int doubling[MAX_N * 2 + 1][MAX_logN];
int count(int l, int r) {
    int res = 0;
    for (int j = MAX_logN - 1; j >= 0; j--) {
        if (doubling[l][j] <= r) {
            l = doubling[l][j];
            res += 1 << j;
        }
    }
    return res;
}
int main() {
    scanf("%d%d", &N, &K);
    for (int i = 0; i < N; i++) {
 
 
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Compilation message (stderr)

event2.cpp: In function 'int main()':
event2.cpp:45:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for (int j = 0; j < invL[i].size(); j++) r = min(r, R[invL[i][j]]);
      |                         ~~^~~~~~~~~~~~~~~~
event2.cpp:49:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for (int j = 0; j <= z.size(); j++) {
      |                         ~~^~~~~~~~~~~
event2.cpp:60:37: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |     for (int i = 0; used.size() - 2 < K; i++) {
      |                     ~~~~~~~~~~~~~~~~^~~
event2.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%d%d", &N, &K);
      |     ~~~~~^~~~~~~~~~~~~~~~
event2.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         scanf("%d%d", L + i, R + i);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 1 / 1
• Subtask 3: 31 / 31
• Subtask 4: 61 / 61