Submission #783037

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
783037	2023-07-14 14:26:30	RushB	LIS (INOI20_lis)	C++17	100 / 100	1084 ms	43152 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for (int i = (a); i < (b); i++) 
using ar = array<int, 2>;
const int INF = 1ll << 30;
const int N = 1e6 + 6;
int n, x[N], p[N], q, ans[N], S[4 * N], delta[4 * N];
ar M[1500], a[N], b[N];
void add(int v, int l, int r, int L, int R, int d) {
        if (R <= l || r <= L) return;
        if (L <= l && r <= R) { 
                delta[v] += d, S[v] += d;
                return;
        }
        int m = l + r >> 1;
        add(v << 1, l, m, L, R, d), add(v << 1 | 1, m, r, L, R, d);
        S[v] = min(S[v << 1], S[v << 1 | 1]) + delta[v];
}
int find(int v, int l, int r) {
        if (l + 1 == r) {
                S[v] = INF;
                if (l + 1 != q) add(1, 0, q, l + 1, q, -1);
                return l;
        }
        int m = l + r >> 1, x;
        if (S[v << 1 | 1] <= S[v << 1]) x = find(v << 1 | 1, m, r);
        else x = find(v << 1, l, m);
        S[v] = min(S[v << 1], S[v << 1 | 1]) + delta[v];
        return x;
 
 
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Compilation message (stderr)

Main.cpp: In function 'void add(int, int, int, int, int, int)':
Main.cpp:16:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   16 |         int m = l + r >> 1;
      |                 ~~^~~
Main.cpp: In function 'int find(int, int, int)':
Main.cpp:26:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   26 |         int m = l + r >> 1, x;
      |                 ~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 80 / 80