Submission #500248

#	Time	Username	Problem	Language	Result	Execution time	Memory
500248		armashka	Divide and conquer (IZhO14_divide)	C++17	17 / 100	1 ms	332 KiB

divide

#include <bits/stdc++.h>
 
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
#define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define all(v) v.begin(),v.end()
#define pb push_back
#define sz size()
#define ft first
#define sd second
 
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef unsigned long long ull;
 
const int N = 1e5 + 5;
const ll M = 1e8;
const ll inf = 1e15;
const ll mod = 1e9;
const double Pi = acos(-1); 
 
ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res *= x;x *= x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); }
bool odd(ll n) { return (n % 2 == 1); }
bool even(ll n) { return (n % 2 == 0); }            

struct node {
	ll x, g, d;
};

ll n, pr[3][N];
node a[N];

bool check(ll x) {
	for (int i = 1; i <= n; ++ i) {
		ll l = i, r = n, pos = -1;
		while (l <= r) {
			ll mid = (l + r) / 2;
			if (pr[1][mid] - pr[1][i - 1] >= x) r = mid - 1, pos = mid;
			else l = mid + 1;
		}
		if (pos != -1 && pr[2][pos] - pr[2][i - 1] >= a[pos].x - a[i].x) return 1;
	}
	return 0;
}

const void solve(/*Armashka*/) {
	cin >> n;
	for (int i = 1; i <= n; ++ i) {
		cin >> a[i].x >> a[i].g >> a[i].d;
		pr[1][i] = pr[1][i - 1] + a[i].g;
		pr[2][i] = pr[2][i - 1] + a[i].d;
	}            	
	ll l = 1, r = inf, ans = 0;
	while (l <= r) {
		ll mid = (l + r) / 2;
		if (check(mid)) l = mid + 1, ans = mid;
		else r = mid - 1;
	}
	cout << ans << "\n";
}
            
signed main() {
    fast;
    //freopen("threesum.in", "r", stdin);
    //freopen("threesum.out", "w", stdout);
    int tt = 1;
    //cin >> tt;
    while (tt --) {                                                             
        solve();
    }
}

Compilation message (stderr)

divide.cpp:3: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    3 | #pragma comment(linker, "/stack:200000000")
      |

• Subtask 1: 17 / 17
• Subtask 2: 0 / 31
• Subtask 3: 0 / 52