Submission #1094358

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094358		Sunbae	September (APIO24_september)	C++17	Compilation error	0 ms	0 KiB

september

#include <cstdio>
#include <algorithm>
#include <vector>
#include <cassert>
#include "september.h"
using namespace std;
const int N = 1e5 + 5, M = 2e5 + 20;
vector<int> g[N];
int bit[M], tin[N], tout[N], mn[N], mx[N], ti;
void upd(int i, int v){ for(; i<M; i+=i&-i) bit[i] += v;}
int qry(int i){ int r = 0; for(; i; i-=i&-i) r += bit[i]; return r;}
void dfs(int u){
	tin[u] = ti++;
	for(int v: g[u]) dfs(v);
	tout[u] = ti-1;
}
int solve(int n, int m, vector<int> up, vector<vector<int>> S){
	for(int i = 0; i<n; ++i) g[i].clear();
	for(int i = ti = 1; i<n; ++i) g[up[i]].push_back(i);
	dfs(0);
	fill(mn, mn+n, n+1); fill(mx, mx+n, 0);
	for(int i = 0, cnt; i<m; ++i){
		fill(bit, bit+n+1, cnt = 0);
		for(int u: S[i]){
			if(!qry(tin[u])){
				++cnt;
				upd(tin[u], +cnt); upd(tout[u]+1, -cnt); 
			}
		}
		for(int j = 1; j<n; ++j){
			int tmp = qry(tin[j]);
			mn[j] = min(mn[j], tmp);
			mx[j] = max(mx[j], tmp);
		}
	}
	fill(bit, bit+(n<<1)+20, 0);
	int MN = (n<<1) + 20, MX = 0;
	for(int i = 1; i<n; ++i){
		int l = (mn[i]<<1), r = (mx[i]<<1);
		upd(l, +1); upd(r+1, -1);
		MN = min(MN, l); MX = max(MX, r);
	}
	int cnt = 0;
	for(int i = MN; i<=MX; ++i) if(qry(i) && !qry(i-1)) ++cnt;
	assert(cnt > = 0 && cnt < n);
	return cnt;
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from september.cpp:4:
september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:45:15: error: expected primary-expression before '=' token
   45 |  assert(cnt > = 0 && cnt < n);
      |               ^