Submission #1000980
Source Code Expand
#include <iostream> #include <iomanip> #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <numeric> #include <random> #include <vector> #include <array> #include <bitset> #include <queue> #include <set> #include <unordered_set> #include <map> #include <unordered_map> using namespace std; using ll = long long; using ull = unsigned long long; constexpr ll TEN(int n) { return (n==0) ? 1 : 10*TEN(n-1); } int bsr(int x) { return 31 - __builtin_clz(x); } const int MN = 5050; using P = pair<ll, ll>; int n; vector<P> v; ll dp[MN][MN]; bool used[MN][MN]; ll calc(int m, int a) { if (m == 0) return 0; int b = n/2 - ((n-m)-(n/2-a)); if (used[m][a]) return dp[m][a]; used[m][a] = true; ll &ans = dp[m][a]; ans = TEN(18); P p = v[m-1]; // left if (a) { ll x = p.first*(a-1); x += p.second*(a); ans = min(ans, x + calc(m-1, a-1)); } // right if (b) { ll x = p.first*(b); x += p.second*(b-1); ans = min(ans, x + calc(m-1, a)); } return ans; } ll main2() { memset(used, false, sizeof(used)); ll ans = 0; if (n % 2 == 1) { // 演算子の優先順位には…気をつけようね! ans += (v[n-1].first+v[n-1].second)*(n/2); n--; } return ans + calc(n, n/2); } int main() { ios::sync_with_stdio(0); cout << setprecision(20); int nn; cin >> nn; n = nn; for (int i = 0; i < n; i++) { ll l, r; cin >> l >> r; v.push_back(P(l, r)); } ll ans = TEN(18); sort(v.begin(), v.end(), [&](const P l, const P r){ ll ls = l.first+l.second; ll rs = r.first+r.second; if (ls != rs) return ls > rs; return l.first > r.first; }); ans = min(ans, main2()); n = nn; sort(v.begin(), v.end(), [&](const P l, const P r){ ll ls = l.first+l.second; ll rs = r.first+r.second; if (ls != rs) return ls > rs; return l.second > r.second; }); ans = min(ans, main2()); cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Intervals |
User | yosupo |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 2204 Byte |
Status | WA |
Exec Time | 846 ms |
Memory | 94848 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1000 | ||||||
Status |
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Set Name | Test Cases |
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Sample | example0.txt, example1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, 032.txt, 033.txt, 034.txt, 035.txt, 036.txt, 037.txt, 038.txt, 039.txt, 040.txt, 041.txt, 042.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 834 ms | 94720 KB |
001.txt | AC | 159 ms | 42496 KB |
002.txt | AC | 828 ms | 94720 KB |
003.txt | WA | 623 ms | 79744 KB |
004.txt | AC | 825 ms | 94720 KB |
005.txt | AC | 313 ms | 55680 KB |
006.txt | AC | 826 ms | 94720 KB |
007.txt | AC | 407 ms | 62848 KB |
008.txt | AC | 829 ms | 94720 KB |
009.txt | AC | 87 ms | 35584 KB |
010.txt | AC | 833 ms | 94720 KB |
011.txt | AC | 350 ms | 58496 KB |
012.txt | AC | 830 ms | 94720 KB |
013.txt | AC | 75 ms | 34176 KB |
014.txt | AC | 827 ms | 94720 KB |
015.txt | AC | 161 ms | 42624 KB |
016.txt | AC | 828 ms | 94720 KB |
017.txt | AC | 614 ms | 78848 KB |
018.txt | AC | 829 ms | 94720 KB |
019.txt | AC | 385 ms | 61312 KB |
020.txt | AC | 29 ms | 25216 KB |
021.txt | AC | 29 ms | 25216 KB |
022.txt | AC | 827 ms | 94720 KB |
023.txt | AC | 830 ms | 94720 KB |
024.txt | AC | 829 ms | 94720 KB |
025.txt | AC | 831 ms | 94720 KB |
026.txt | AC | 826 ms | 94720 KB |
027.txt | AC | 827 ms | 94720 KB |
028.txt | AC | 830 ms | 94720 KB |
029.txt | AC | 826 ms | 94720 KB |
030.txt | AC | 828 ms | 94720 KB |
031.txt | AC | 826 ms | 94720 KB |
032.txt | AC | 830 ms | 94720 KB |
033.txt | AC | 827 ms | 94720 KB |
034.txt | AC | 832 ms | 94720 KB |
035.txt | AC | 830 ms | 94720 KB |
036.txt | AC | 839 ms | 94848 KB |
037.txt | AC | 846 ms | 94720 KB |
038.txt | AC | 830 ms | 94720 KB |
039.txt | AC | 831 ms | 94720 KB |
040.txt | AC | 827 ms | 94720 KB |
041.txt | AC | 827 ms | 94720 KB |
042.txt | AC | 830 ms | 94720 KB |
example0.txt | AC | 29 ms | 25216 KB |
example1.txt | AC | 29 ms | 25216 KB |