| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 543181 |
2022-03-29T16:33:29 Z |
SmolBrain |
San (COCI17_san) |
C++17 |
|
600 ms |
39272 KB |
// Om Namah Shivaya
// GM in 126 days
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define endl '\n'
#define pb push_back
#define conts continue
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "YES" << endl
#define no cout << "NO" << endl
#define ff first
#define ss second
#define ceil2(x,y) ((x+y-1) / (y))
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#ifndef ONLINE_JUDGE
#define debug(x) cout << #x <<" = "; print(x); cout << endl
#else
#define debug(x)
#endif
#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)
bool iseven(ll n) {if ((n & 1) == 0) return true; return false;}
void print(ll t) {cout << t;}
void print(int t) {cout << t;}
void print(string t) {cout << t;}
void print(char t) {cout << t;}
void print(double t) {cout << t;}
void print(ld t) {cout << t;}
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(pair <T, V> p) {cout << "{"; print(p.ff); cout << ","; print(p.ss); cout << "}";}
template <class T> void print(vector <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T> void print(set <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T> void print(multiset <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T, class V> void print(map <T, V> v) {cout << "[ "; for (auto i : v) {print(i); cout << " ";} cout << "]";}
template<typename T> void amin(T &a, T b) { a = min(a, b); }
template<typename T> void amax(T &a, T b) { a = max(a, b); }
void usaco(string filename) {
freopen((filename + ".in").c_str(), "r", stdin);
freopen((filename + ".out").c_str(), "w", stdout);
}
const int MOD = 1e9 + 7;
const int maxn = 1e5 + 5;
const int inf1 = 1e9 + 5;
const ll inf2 = ll(1e18) + 5;
void solve(int test_case)
{
ll n, k; cin >> n >> k;
vector<pll> a(n);
rep(i, n) cin >> a[i].ff >> a[i].ss;
vector<ll> b(n);
rep(i, n) b[i] = a[i].ff;
sort(all(b));
auto it = unique(all(b));
b.resize(it - b.begin());
rep(i, n) a[i].ff = lower_bound(all(b), a[i].ff) - b.begin();
ll group1 = n / 2, group2 = ceil2(n, 2);
vector<vector<ll>> val1(n), val2(n);
rep(mask, 1 << group1) {
ll prev = 0, sum = 0;
bool flag = true;
rep(i, group1) {
ll f = 1ll << i;
if (!(mask & f)) conts;
if (a[i].ff < prev) {
flag = false;
break;
}
prev = a[i].ff;
sum += a[i].ss;
}
if (!flag) conts;
val1[prev].pb(sum);
}
rep(mask, 1 << group2) {
ll prev = 0, sum = 0;
bool flag = true;
rep(i, group2) {
ll f = 1ll << i;
if (!(mask & f)) conts;
if (a[i + group1].ff < prev) {
flag = false;
break;
}
prev = a[i + group1].ff;
sum += a[i + group1].ss;
}
if (!flag) conts;
ll first = n - 1;
rep(i, group2) {
ll f = 1 << i;
if (mask & f) {
first = a[i + group1].ff;
break;
}
}
val2[first].pb(sum);
}
Tree<pll> os;
ll ans = 0;
ll cnt = 0;
rev(i, n - 1, 0) {
trav(x, val2[i]) {
os.insert({x, cnt++});
}
trav(x, val1[i]) {
ll mn = k - x;
ll temp = os.order_of_key({mn, -1});
ans += sz(os) - temp;
}
}
cout << ans << endl;
}
int main()
{
fastio;
int t = 1;
// cin >> t;
rep1(i, t) {
solve(i);
}
return 0;
}
Compilation message
san.cpp: In function 'void usaco(std::string)':
san.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
64 | freopen((filename + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
san.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
65 | freopen((filename + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
316 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
45 ms |
5076 KB |
Output is correct |
| 2 |
Correct |
4 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
87 ms |
9996 KB |
Output is correct |
| 2 |
Correct |
21 ms |
1124 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
600 ms |
39272 KB |
Output is correct |
| 2 |
Correct |
92 ms |
3828 KB |
Output is correct |
