Submission #893649

#	Time	Username	Problem	Language	Result	Execution time	Memory
893649		vjudge1	Segments (IZhO18_segments)	C++17	0 / 100	5075 ms	11952 KiB

segments

// 以上帝的名义
// 候选硕士
#include <bits/stdc++.h>

#ifdef local
#include "algo/debug.h"
#else
#define dbg(x...) 0
#endif

using namespace std ;
using ll = long long ;
using ld = long double ;

int32_t main() {
    int n, t ;
    scanf("%d%d", &n, &t) ;
    int last = 0 ;
    map<pair<int,int>,int> cnt ;
    map<int,pair<int,int>> ind ;
    int idx = 0 ;
    for (int i = 0 ; i < n ; i++ ){
        int type ; scanf("%d", &type) ;
        if (type == 1) {
            int a, b ; scanf("%d%d", &a, &b) ;
            int l = (a ^ (last * t)) ;
            int r = (b ^ (last * t)) ;
            cnt[{l,r}]++ ; idx++ ;
            ind[idx] = {l, r} ;
//            dbg(type, l, r) ;
        } else if (type == 2) {
            int j ; cin >> j ;
            auto c = ind[j] ;
            cnt[c]-- ;
            if (cnt[c] == 0) cnt.erase(c) ;
        } else {
            int a, b, k ;scanf("%d%d%d", &a, &b, &k) ;
            int l = (a ^ (t * last)) ;
            int r = (b ^ (t * last)) ;
            int ans = 0 ;
            for (auto [c, p] : cnt) {
                auto [L, R] = c ;
                L = max(L, l) , R = min(R , r) ;
                if (R - L + 1 >= k) {
                    ans++ ;
                }
            }
//            dbg(type, l, r) ;
            printf("%d\n", ans) ;
            last = ans ;
        }
    }
    return 0 ;
}

// 希望白银

Compilation message (stderr)

segments.cpp: In function 'int32_t main()':
segments.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     scanf("%d%d", &n, &t) ;
      |     ~~~~~^~~~~~~~~~~~~~~~
segments.cpp:23:25: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         int type ; scanf("%d", &type) ;
      |                    ~~~~~^~~~~~~~~~~~~
segments.cpp:25:29: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |             int a, b ; scanf("%d%d", &a, &b) ;
      |                        ~~~~~^~~~~~~~~~~~~~~~
segments.cpp:37:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |             int a, b, k ;scanf("%d%d%d", &a, &b, &k) ;
      |                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~

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