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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#770054 | #9742. 优秀的拆分 | Symmetree | Compile Error | / | / | C++20 | 2.3kb | 2024-11-21 20:26:53 | 2024-11-21 20:26:54 |
Judging History
This is the latest submission verdict.
- [2024-11-21 20:26:54]
- Judged
- Verdict: Compile Error
- Time: 0ms
- Memory: 0kb
- [2024-11-21 20:26:53]
- Submitted
answer
#include<bits/stdc++.h>
// f[i] = max(f[j]) + 1
const int N = 2e5+5;
using i64 = long long;
using i128 = __int128;
int n, c[N], p[N], f[2][N], g[2][N]; i64 d[N], cntf[2][N], cntg[2][N];
void add(int x, int k, i64 cnt) {
for(; x <= n; x += x&-x) {
if(c[x] < k) c[x] = k, d[x] = cnt;
else if(c[x] == k) d[x] += cnt;
}
}
int ask1(int x) {
int ans = 0;
for(; x; x -= x&-x) ans = std::max(ans, c[x]);
return ans;
}
i64 ask2(int x) {
i64 ans = 1; int now = 0;
for(; x; x -= x&-x) {
if(now < c[x]) ans = d[x], now = c[x];
else if(now == c[x]) ans += d[x];
}
return ans;
}
void calc(int f[], i64 cntf[]) {
for(int i = 1; i <= n; ++i) c[i] = d[i] = 0;
for(int i = 1; i <= n; ++i) {
f[i] = ask1(p[i]) + 1;
cntf[i] = ask2(p[i]);
add(p[i], f[i], cntf[i]);
}
}
void solve() {
scanf("%d", &n);
for(int i = 1; i <= n; ++i) scanf("%d", &p[i]);
// for(int i = 1; i <= n; ++i) printf("%d %lld\n", c[i], d[i]);
// for(int i = 1 ; i <= n; ++i) printf("%d %lld\n", f[0][i], cntf[0][i]);
calc(f[0], cntf[0]);
std::reverse(p + 1, p + n + 1);
calc(g[1], cntg[1]);
std::reverse(g[1] + 1, g[1] + n + 1);
std::reverse(cntg[1] + 1, cntg[1] + n + 1);
for(int i = 1; i <= n; ++i) p[i] = n + 1 - p[i];
calc(f[1], cntf[1]);
std::reverse(f[1] + 1, f[1] + n + 1);
std::reverse(cntf[1] + 1, cntf[1] + n + 1);
std::reverse(p + 1, p + n + 1);
calc(g[0], cntg[0]);
// for(int i = 1; i <= n; ++i) printf("%d %lld %d %lld\n", f[0][i], cntf[0][i], f[1][i], cntf[1][i]);
// puts("");
// for(int i = 1; i <= n; ++i) printf("%d %lld %d %lld\n", g[0][i], cntg[0][i], g[1][i], cntg[1][i]);
int LIS = 0, LDS = 0;
for(int i = 1; i <= n; ++i) {
LIS = std::max(LIS, f[0][i]);
LDS = std::max(LDS, g[0][i]);
}
i64 numi = 0, numd = 0, num = 0;
for(int i = 1; i <= n; ++i) {
if(f[0][i] == LIS) numi += cntf[0][i];
if(g[0][i] == LDS) numd += cntg[0][i];
if(f[0][i] + f[1][i] - 1 == LIS && g[0][i] + g[1][i] - 1 == LDS) {
num += cntf[0][i] * cntf[1][i] * cntg[0][i] * cntg[1][i];
}
}
assert(numi >= 0), assert(numd >= 0), assert(num >= 0);
std::cerr << numi << " " << numd << " " << num << endl;
if(numi * numd == num) printf("%d\n", LIS + LDS - 1);
else printf("%d\n", LIS + LDS);
}
signed main() {
int t;
scanf("%d", &t);
while(t--) solve();
return 0;
}
Details
answer.code: In function ‘void solve()’: answer.code:68:59: error: ‘endl’ was not declared in this scope; did you mean ‘std::endl’? 68 | std::cerr << numi << " " << numd << " " << num << endl; | ^~~~ | std::endl In file included from /usr/include/c++/13/bits/unique_ptr.h:42, from /usr/include/c++/13/memory:78, from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:56, from answer.code:1: /usr/include/c++/13/ostream:735:5: note: ‘std::endl’ declared here 735 | endl(basic_ostream<_CharT, _Traits>& __os) | ^~~~ answer.code:35:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 35 | scanf("%d", &n); | ~~~~~^~~~~~~~~~ answer.code:36:42: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 36 | for(int i = 1; i <= n; ++i) scanf("%d", &p[i]); | ~~~~~^~~~~~~~~~~~~ answer.code: In function ‘int main()’: answer.code:74:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 74 | scanf("%d", &t); | ~~~~~^~~~~~~~~~