Submission #467277

#	Time	Username	Problem	Language	Result	Execution time	Memory
467277		mansur	Fountain (eJOI20_fountain)	C++17	60 / 100	1578 ms	3196 KiB

fountain

#include<bits/stdc++.h>	
 
#pragma optimize ("g",on)
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
             		
using namespace std;
 
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ll long long
#define pb push_back
#define nl '\n'
#define popb pop_back()
#define sz size()
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second  
#define fix fixed << setprecision
#define pii pair<int, int>
#define E exit (0)
#define int long long
 
const int inf = (1ll << 62ll), N = 1e6 + 2, mod = 1e9 + 7;                    
 
vector<pii> dd = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};

signed main() {
	//freopen("invtrans.in", "r", stdin);
	//freopen("invtrans.out", "w", stdout);
	ios_base::sync_with_stdio(NULL);
	cin.tie(NULL);
	int n, q;
	cin >> n >> q;
	int d[n + 1], c[n + 1];
	bool ok = 1;
	for (int i = 1; i <= n; i++) {
		cin >> d[i] >> c[i];
		if (i > 1 && d[i] <= d[i - 1]) ok = 0;
	}
	if (ok) {
		int pref[n + 1];
		pref[0] = 0;
		for (int i = 1; i <= n; i++) pref[i] = pref[i - 1] + c[i];
		while (q--) {
			int r, v;
			cin >> r >> v;
			int tl = r, tr = n, ans =0;
			while (tl <= tr) {
				int mid = (tl + tr) / 2;
				if (pref[mid] - pref[r - 1] >= v) {
					ans = mid;
					tr = mid - 1;
				}else tl = mid + 1;
			}
			cout << ans << nl;
		}	
		return 0;
	}
	while (q--) {
		int r, v;
		cin >> r >> v;
		int last = 0, ans = 0;
		for (int i = r; i <= n; i++) {
			if (d[i] > last) {
				last = d[i];
				v -= c[i];
				if (v <= 0) {
					ans = i;
					break;
				}
			}
		}
		cout << ans << nl;
	}
}    	                                                        

Compilation message (stderr)

fountain.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize ("g",on)
      |

• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 0 / 40