제출 #1298676

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1298676		tminh	Snowball (JOI21_ho_t2)	C++20	100 / 100	173 ms	17796 KiB

Main

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

#define task ""
#define ll long long
#define endl '\n'
#define fi first
#define se second
#define vall(a) (a).begin(), (a).end()
#define sze(a) (int)a.size()
#define pii pair<int, int>
#define pll pair<ll, ll>


#define ep emplace_back
#define pb push_back
#define pf push_front


const ll mod = 1e9 + 7;
const int N = 1e6 + 5;
const ll oo = 1e18;

int n, q;
ll x[N], d[N], ans[N];
set<pll> sad;



inline void solve() {
	for (int i = 2; i <= n; ++i) {
		ll dist = x[i] - x[i - 1];
		sad.insert(make_pair(dist, i));
	}
	sad.insert(make_pair(oo, 1));
	sad.insert(make_pair(oo, n + 1));
	
	ll maxleft = 0, maxright = 0, cur = 0;
	while(q--) {
		ll w; cin >> w;
		cur += w;
		
		if (cur > 0) {
			auto it = sad.upper_bound(make_pair(cur + maxleft, oo));
			if (it != sad.begin()) {
				it = prev(it);
				while (true) {
					auto[interval, id] = *it;
					it = sad.erase(it);
					
					ans[id] += min(maxleft, interval);
					ans[id - 1] += max(interval - maxleft, 0ll);
					
					if (it == sad.begin()) break;
					it = prev(it); 
					
					
				}
			}
			maxright = max(maxright, cur);
		}
		
		if (cur < 0) {
			auto it = sad.upper_bound(make_pair(maxright - cur, oo));
			if (it != sad.begin()) {
				it = prev(it);
				while (true) {
					auto[interval, id] = *it;
					it = sad.erase(it);
					
					ans[id - 1] += min(maxright, interval);
					ans[id] += max(interval - maxright, 0ll);
					
					if (it == sad.begin()) break;
					it = prev(it); 
					
					
				}
			}
			maxleft = max(maxleft, -cur);
		}
// 		
		// for (int i = 1; i <= n; ++i) cout << ans[i] << endl;
		// cout << endl;
	}
	for (auto[interval, id] : sad) {
		ans[id] += maxleft;
		ans[id - 1] += maxright;
	}
	
	for (int i = 1; i <= n; ++i) cout << ans[i] << endl;
	
	
	
}


inline void input() {
	cin >> n >> q;
	for (int i = 1; i <= n; ++i) cin >> x[i];    
    return solve();
}

int main() {
    if(fopen(task ".inp", "r")) {
        freopen(task ".inp", "r", stdin);
        freopen(task ".out", "w", stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);

    input();
    return 0;
}
//2911

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen(task ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:107:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  107 |         freopen(task ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 33 / 33
• Subtask 2: 67 / 67