Submission #1340087

#	Time	Username	Problem	Language	Result	Execution time	Memory
1340087		asim	Dodatna (COCI25_dodatna)	C++20	51 / 70	1082 ms	15704 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define F first
#define S second
#define pb push_back
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define endl "\n"
#define Yes cout << "YES" << endl;
#define No cout << "NO" << endl;
#define mod(a) ((a % MOD + MOD) % MOD)

#define inp(v) for(auto &a : v) cin >> a;
#define out(v) for(auto &a : v) cout << a << " ";

const int MOD = (int)1e9 + 7;
const int MAX = (int)1e5;
vector<pair<int, int>> vt;
bool check(int m, int k, int eded) {
    int say = 0;
    vector<pair<int, int>> mp;
    int eded2 = LLONG_MAX;
    eded = 0;
    for(auto[l, r] : vt) {
        if(r - l >= m) {
            mp.pb({l, 1});
            mp.pb({r - m + 1, -1});
            eded = max(eded, r - m + 1);
            eded2 = min(eded2, l);
        }
    }
    sort(all(mp));
    for(auto[l, r] : mp) {
        say += r;
        if(say >= k) {
            return true;
        }
    }
    return false;
}
void solve() {
    //x >> y = x / (2 ^ y)
    //x << y =  x * (2 ^ y)
    int n,k;
    cin >> n >> k;
    int eded = -1;
    for(int i = 1; i <= n; i++) {
        int x,y;
        cin >> x >> y;
        eded = max(eded, y);
        vt.pb(make_pair(x, y));
    }
    if(k == 1) {
        int ans = 0;
        for(auto[l, r] : vt) {
            ans = max(ans, r - l);
        }
        cout << ans << endl;
        return;
    }
    int l = 0, r = eded;
    int ans = 0;
    while(l <= r) {
        int m = l + (r - l) / 2;
        if(check(m, k, eded)) {
            l = m + 1;
            ans = max(ans, m);
        }
        else {
            r = m - 1; 
        }
    }
    cout << ans << endl;
}

signed main() {
    ios_base::sync_with_stdio(false); 
    cin.tie(nullptr); 
    cout.tie(nullptr);
    int t = 1;
    //cin >> t;
    while (t--) {
        solve();
    }
}

Compilation message (stderr)

Main.cpp: In function 'bool check(int, int, int)':
Main.cpp:23:17: warning: overflow in conversion from 'long long int' to 'int' changes value from '9223372036854775807' to '-1' [-Woverflow]
   23 |     int eded2 = LLONG_MAX;
      |                 ^~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 13 / 13
• Subtask 2: 27 / 27
• Subtask 3: 11 / 11
• Subtask 4: 0 / 19