ans开个long long
by light_searcher @ 2023-08-12 18:54:12
@[lzhabc](/user/724648) 还是WA#17啊呜呜
```
#include<bits/stdc++.h>
#define ull unsigned long long
using namespace std;
const int N = 1000005, P1 = 131, P2 = 1331, P3 = 13331;
struct node {
int l, r, val;
} a[N];
int clh[N];
void dfs(int x, int pa) {
clh[x] = 0;
if(a[x].l == -1 && a[x].r == -1) {
clh[x] = 1;
return;
}
if(a[x].l != -1) {
dfs(a[x].l, x);
clh[x] += clh[a[x].l];
}
if(a[x].r != -1) {
dfs(a[x].r, x);
clh[x] += clh[a[x].r];
}
clh[x]++;
}
//bool check_list_l(int x) {
// if(a[x].l != -1) {
// if(a[x].r != -1) return false;
// return check_list_l(a[x].l);
// }
// return true;
//}
//
//bool check_list_r(int x) {
// if(a[x].r != -1) {
// if(a[x].l != -1) return false;
// return check_list_r(a[x].r);
// }
// return true;
//}
ull preo1(int x) {
// cout << x << endl;
if(a[x].l == -1 && a[x].r == -1) return a[x].val;
int res = 0;
if(a[x].l != -1) res += preo1(a[x].l) * P1;
if(a[x].r != -1) res += preo1(a[x].r) * P2;
return res + a[x].val * P3;
}
ull preo2(int x) {
// cout << x << endl;
if(a[x].l == -1 && a[x].r == -1) return a[x].val;
int res = 0;
if(a[x].r != -1) res += preo2(a[x].r) * P1;
if(a[x].l != -1) res += preo2(a[x].l) * P2;
return res + a[x].val * P3;
}
int main() {
int n;
cin >> n;
for(int i = 1; i <= n;i++) cin >> a[i].val;
for(int i = 1; i <= n; i++) cin >> a[i].l >> a[i].r;
long long ans = LONG_LONG_MIN;
dfs(1, -1);
//cout << "Hello" << endl;
// cout << preo1(2) << " " << preo2(6) << endl;
for(int i = 1; i <= n; i++) {
// if(a[i].l != -1 && a[i].r != -1) {
// cout << i << " : " <<
// }
// if(a[i].l != -1 && check_list_l(a[i].l)) {
// ans = max(ans, clh[i]);
// cout << " --- " << i << endl;
// }
// else if(a[i].r != -1 && check_list_r(a[i].r)) {
// ans = max(ans, clh[i]);
// cout << " --- " << i << endl;
// }
if(a[i].l != -1 && a[i].r != -1 && preo1(a[i].l) == preo2(a[i].r)) {
if(ans < clh[i]) ans = clh[i];
}
}
if(ans == LONG_LONG_MIN) ans = 1;
cout << ans << endl;
return 0;
}
```
by Chinshyo @ 2023-08-12 19:00:53
@[qxhAwA](/user/312820) 。。
by light_searcher @ 2023-08-12 19:04:29
@[qxhAwA](/user/312820) long long开了，但没完全开
by light_searcher @ 2023-08-12 19:04:56
@[lzhabc](/user/724648)
改了还是不对，但是我初步判断不是爆int的问题，因为这个点输出是9，不会炸int。另外有人把数据发给我了，我实在不懂为什么这个点输出9，大佬能不能帮我看看
```
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by Chinshyo @ 2023-08-12 19:10:12
@[qxhAwA](/user/312820) 我滚轮燃起来了
by light_searcher @ 2023-08-12 19:13:30
@[lzhabc](/user/724648) 抱歉抱歉，我应该剪贴板的。但是全是1
by Chinshyo @ 2023-08-12 19:16:25
@[Chinshyo](/user/312820) 请问你现在过了吗QWQ
by Jessica2333 @ 2023-11-13 14:27:02