Submission #378931

#	Time	Username	Problem	Language	Result	Execution time	Memory
378931		2qbingxuan	Segments (IZhO18_segments)	C++14	23 / 100	5074 ms	3932 KiB

segments

#pragma GCC optimize("Ofast")
#pragma loop_opt(on)
#include <bits/stdc++.h>
#ifdef local
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
#define debug(a...) qqbx(#a, a)
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\033[1;32m(" << s << ") = (") , ... , (std::cerr << a << (--cnt ? ", " : ")\033[0m\n")));
}
#else
#define safe ((void)0)
#define debug(...) ((void)0)
#endif // local
#define all(v) begin(v),end(v)

using namespace std;
typedef int64_t ll;

constexpr ll maxn = 300025, INF = 1e18, MOD = 998244353, K = 14699, inf = 1e9;

pair<int,int> seg[maxn];
bool dead[maxn];
int segId = 0;
void add(int l, int r, int k) {
    debug(l, r, k);
}
int query(int l, int r, int k) {
    debug(l, r, k);
    int res = 0;
    for (int i = 0; i < segId; i++) {
        if (dead[i]) continue;
        auto [nl, nr] = seg[i];
        if (nr - nl >= k) {
            ++res;
            if (nr < l + k) --res;
            if (nl > r - k) --res;
        }
    }
    return res;
}
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int n, encode;
    cin >> n >> encode;

    int ans = 0;
    for (int i = 0; i < n; i++) {
        int t;
        cin >> t;
        if (t == 1) {
            int a, b;
            cin >> a >> b;
            if (encode) a ^= ans, b ^= ans;
            if (a > b) swap(a, b);
            ++b;
            add(a, b, 1);
            seg[segId++] = { a, b };
        } else if (t == 2) {
            int id;
            cin >> id;
            --id;
            dead[id] = true;
            auto [a, b] = seg[id];
            add(a, b, -1);
        } else if (t == 3) {
            int a, b, k;
            cin >> a >> b >> k;
            if (encode) a ^= ans, b ^= ans;
            if (a > b) swap(a, b);
            ++b;
            ans = query(a, b, k);
            cout << ans << '\n';
        }
    }
}
/*
6 1
1 1 2
3 2 4 2
1 3 5 
3 2 3 1
2 1 
3 0 3 1

6 0
1 3 10
1 3 5
3 6 10 6
2 1
1 3 10
3 6 4 2
 */

Compilation message (stderr)

segments.cpp:2: warning: ignoring #pragma loop_opt  [-Wunknown-pragmas]
    2 | #pragma loop_opt(on)
      | 
segments.cpp: In function 'int query(int, int, int)':
segments.cpp:33:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   33 |         auto [nl, nr] = seg[i];
      |              ^
segments.cpp: In function 'int main()':
segments.cpp:64:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   64 |             auto [a, b] = seg[id];
      |                  ^

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