Submission #440315

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
440315	2021-07-02 03:45:58	SorahISA	Handcrafted Gift (IOI20_gift)	C++17	100 / 100	276 ms	35560 KiB

gift

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#include "gift.h"
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
template<typename T>
using Prior = std::priority_queue<T>;
template<typename T>
using prior = std::priority_queue<T, vector<T>, greater<T>>;
#define X first
#define Y second
#define eb emplace_back
#define pb pop_back
#define pf pop_front
#define ALL(x) begin(x), end(x)
#define RALL(x) rbegin(x), rend(x)
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
vector<pii> merge_overlap(vector<pii> &vec) {
    sort(ALL(vec));
    vector<pii> ret;
    int L = vec.front().X, maxR = vec.front().Y;
    for (auto [l, r] : vec) {
        if (l <= maxR) maxR = max(maxR, r);
        else ret.eb(L, maxR), tie(L, maxR) = tie(l, r);
    }
    ret.eb(L, maxR);
    return ret;
 
 
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Compilation message (stderr)

gift.cpp: In function 'int construct(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
gift.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (int i = 0; i < identical.size(); ++i) {
      |                     ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 20 / 20
• Subtask 4: 25 / 25
• Subtask 5: 30 / 30