제출 #1116663

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1116663		vjudge1	Segments (IZhO18_segments)	C++17	0 / 100	4 ms	336 KiB

segments

#include <bits/stdc++.h>
#pragma optimize("g", on)
#pragma GCC optimize ("inline")
#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")
void Freopen () {
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
}
using namespace std;
#define fi first
#define se second
#define int long long
const int N = 2e3 + 7;

void solve() {
	int n, t;
	cin>>n>>t;
	if(n <= 5000) {
		vector<pair<int, int> > seg(n + 1, {0, 0});
		set<int> id;
		for(int i = 1; i <= n; i++)id.insert(i);
		int lst = 0;
		for(int _i = 0; _i < n; _i++) {
			int ty, l, r, x;
			cin>>ty;
			if(ty == 1) {
				cin>>l>>r;
				l = (l ^ (t * lst)), r = (r ^ (t * lst));
				if(l > r)swap(l, r);
				int dd = *id.begin();
				id.erase(dd);
				seg[dd] = {l, r};
			}else if(ty == 2) {
				cin>>x;
				seg[x] = {0, 0};
				id.insert(x);
			}else {
				cin>>l>>r>>x;
				l = (l ^ (t * lst)), r = (r ^ (t * lst));
				if(l > r)swap(l, r);
				int res = 0;
				// cout << "\n>>>>>>>\n" << l << ' ' << r << '\n'; 
				for(int i = 1; i <= n; i++) {
					int lx = max(l, seg[i].fi), rx = min(r, seg[i].se);
					// cout << lx << ' ' << rx << '\n';
					if((rx - lx + 1) >= x)res ++;
				}
				// cout << '\n';
				cout << res << '\n';
				lst = res;
			}
		}
		return;
	}
	if(t == 0) {

	}else {

	}
}
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	Freopen();
	int T = 1;
	// cin>>T;
	while(T --)solve();
}
/*

*/

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp:2: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    2 | #pragma optimize("g", on)
      | 
segments.cpp: In function 'void Freopen()':
segments.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
segments.cpp:11:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 15
• Subtask 3: 0 / 16
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20
• Subtask 6: 0 / 25