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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#397878 | #5438. Half Mixed | caijianhong | TL | 1ms | 3592kb | C++14 | 1.4kb | 2024-04-24 18:56:39 | 2024-04-24 18:56:39 |
Judging History
answer
//
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#define debug(...) fprintf(stderr, ##__VA_ARGS__)
#else
#define endl "\n"
#define debug(...) void(0)
#endif
typedef long long LL;
vector<int> knapsack(int n, LL m) {
// (n, m)
// (x, (x - 1) * x / 2)
vector<int> ret;
while (m) {
LL x = sqrt(x);
while (x * (x + 1) / 2 <= m) x += 1;
while (x * (x - 1) / 2 > m) x -= 1;
ret.push_back(x);
n -= x;
m -= x * (x - 1) / 2;
}
assert(n >= 0);
ret.insert(ret.end(), n, 1);
return ret;
}
auto solve(int n) { return knapsack(n, 1ll * n * (n + 1) / 4 - n); }
int main() {
#ifndef LOCAL
cin.tie(nullptr)->sync_with_stdio(false);
#endif
int t;
cin >> t;
while(t--) {
int n, m;
cin >> n >> m;
if (1ll * m * (m + 1) % 4 == 0) {
string s;
auto ret = solve(m);
int c = 0;
for (int len : ret) s.append(len, c + '0'), c ^= 1;
cout << "Yes" << endl;
for (int i = 1; i <= n; i++) for (int i = 0; i < m; i++) cout << s[i] << " \n"[i + 1 == m];
} else if (1ll * n * (n + 1) % 4 == 0) {
string s;
auto ret = solve(n);
int c = 0;
for (int len : ret) s.append(len, c + '0'), c ^= 1;
cout << "Yes" << endl;
for (auto ch : s) for (int i = 0; i < m; i++) cout << ch << " \n"[i + 1 == m];
} else {
cout << "No" << endl;
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3592kb
input:
2 2 3 1 1
output:
Yes 0 1 0 0 1 0 No
result:
ok OK, Accepted. (2 test cases)
Test #2:
score: -100
Time Limit Exceeded
input:
5382 1 1 1 2 2 1 1 3 2 2 3 1 1 4 2 3 3 2 4 1 1 5 2 4 3 3 4 2 5 1 1 6 2 5 3 4 4 3 5 2 6 1 1 7 2 6 3 5 4 4 5 3 6 2 7 1 1 8 2 7 3 6 4 5 5 4 6 3 7 2 8 1 1 9 2 8 3 7 4 6 5 5 6 4 7 3 8 2 9 1 1 10 2 9 3 8 4 7 5 6 6 5 7 4 8 3 9 2 10 1 1 11 2 10 3 9 4 8 5 7 6 6 7 5 8 4 9 3 10 2 11 1 1 12 2 11 3 10 4 9 5 8 6 ...
output:
No No No Yes 0 1 0 No Yes 0 1 0 Yes 0 0 1 0 Yes 0 1 0 0 1 0 Yes 0 0 1 1 0 0 Yes 0 0 1 0 No Yes 0 0 1 0 0 0 1 0 Yes 0 1 0 0 1 0 0 1 0 Yes 0 0 0 0 1 1 0 0 No No No Yes 0 0 1 0 0 0 1 0 0 0 1 0 Yes 0 1 0 0 1 0 0 1 0 0 1 0 No No Yes 0 0 0 0 1 1 0 No Yes 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 Yes 0 0 1 0 0 0 1 0 0...