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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#487734 | #9156. 百万富翁 | HuTao | 100 ✓ | 2348ms | 99832kb | C++14 | 3.5kb | 2024-07-23 08:46:10 | 2024-07-23 08:46:10 |
Judging History
answer
/*
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
const int N = 1e6 + 5, K = 10;
int n, m;
LL f[N], g[N];
int p[K][N];
inline LL Calc(int i, int j)
{
LL t = i / j, p = i % j, q = j - p;
return q * t * (t - 1) / 2 + p * t * (t + 1) / 2;
}
inline void Solve(int k, int l, int r, int L, int R)
{
L = max(L, 1), R = min(R, n);
if(l > r) return ;
if(L == R)
{
for(int i = l; i <= r; i ++ )
{
f[i] = g[L] + Calc(i, L);
p[k][i] = L;
}
return ;
}
int mid = (l + r) >> 1;
for(int i = L; i <= min(R, mid); i ++ )
{
if(g[i] + Calc(mid, i) < f[mid])
{
f[mid] = g[i] + Calc(mid, i);
p[k][mid] = i;
}
}
Solve(k, l, mid - 1, L, p[k][mid] + 20);
Solve(k, mid + 1, r, p[k][mid] - 20, R);
}
int main()
{
n = 1e6, m = 8;
memset(g, 0x3f, sizeof g);
g[1] = 0;
for(int i = 1; i <= m; i ++ )
{
memset(f, 0x3f, sizeof f);
Solve(i, 1, n, 1, n);
memcpy(g, f, sizeof g);
int mx = 0;
for(int j = 1; j < n; j ++ ) mx = max(mx, p[i][j] - p[i][j + 1]);
}
printf("%lld\n", f[n]);
for(int i = m, j = n; i >= 1; i -- )
{
j = p[i][j];
printf("%d\n", j);
}
return 0;
}
*/
#include "richest.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
const int num[] = {500000, 250000, 125000, 62496, 20832, 3472, 183, 1};
int cnt[N];
vector<int> p, q, qx, qy, res;
inline void MakeQuery(int l, int r)
{
for(int i = l; i < r; i ++ )
for(int j = i + 1; j < r; j ++ )
qx.push_back(q[i]), qy.push_back(q[j]);
}
inline void GetMax(int l, int r, int L, int R)
{
int k = r - l;
for(int i = L; i < R; i ++ )
cnt[res[i]] ++ ;
for(int i = l; i < r; i ++ )
if(cnt[q[i]] == k - 1)
p.push_back(q[i]);
}
int richest(int n, int t, int s)
{
p.clear(), q.clear(), qx.clear(), qy.clear();
memset(cnt, 0, sizeof cnt);
for(int i = 0; i < n; i ++ ) q.push_back(i);
if(t == 1)
{
MakeQuery(0, n);
res = ask(qx, qy);
GetMax(0, n, 0, n * (n - 1) / 2);
return p[0];
}
else
{
for(int i = 0; i < 8; i ++ )
{
qx.clear(), qy.clear();
int n = q.size(), m = num[i];
if(1)
{
int x = n / m, p = n % m, q = m - p;
int k = 0, l = 0;
for(int i = 1; i <= q; i ++ )
{
MakeQuery(k, k + x);
k += x;
}
for(int i = 1; i <= p; i ++ )
{
MakeQuery(k, k + x + 1);
k += x + 1;
}
res = ask(qx, qy);
k = 0, l = 0;
for(int i = 1; i <= q; i ++ )
{
GetMax(k, k + x, l, l + x * (x - 1) / 2);
k += x, l += x * (x - 1) / 2;
}
for(int i = 1; i <= p; i ++ )
{
GetMax(k, k + x + 1, l, l + x * (x + 1) / 2);
k += x + 1, l += x * (x + 1) / 2;
}
}
for(int i = 0; i < n; i ++ ) cnt[q[i]] = 0;
q = p, p.clear();
}
return p[0];
}
}
Details
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Pretests
Pretest #1:
score: 15
Accepted
time: 636ms
memory: 29372kb
input:
1000 1 499500 957319859
output:
Correct 7127326332295218295 1.000000 1331569654267968081
result:
points 1.0 Correct
Pretest #2:
score: 85
Accepted
time: 2316ms
memory: 99832kb
input:
1000000 20 2000000 29091473
output:
Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944 7610580723948932399 1.000000 1331569654267968081
result:
points 1.0 Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944
Final Tests
Test #1:
score: 15
Accepted
time: 638ms
memory: 28644kb
input:
1000 1 499500 957319857
output:
Correct 7127326332295218295 1.000000 1331569654267968081
result:
points 1.0 Correct
Test #2:
score: 85
Accepted
time: 2348ms
memory: 99760kb
input:
1000000 20 2000000 29091471
output:
Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944 7610580723948932399 1.000000 1331569654267968081
result:
points 1.0 Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944