Submission #1058309
Source Code Expand
#ifdef DEBUG #define _GLIBCXX_DEBUG #endif #include <bits/stdc++.h> using namespace std; mt19937 mrand(random_device{} ()); int rnd(int x) { return mrand() % x; } typedef long double ld; typedef long long ll; #ifdef DEBUG #define eprintf(...) fprintf(stderr, __VA_ARGS__), fflush(stderr) #else #define eprintf(...) ; #endif #define pb push_back #define mp make_pair #define sz(x) ((int) (x).size()) #define TASK "text" const int inf = (int) 1.01e9; const ld eps = 1e-9; const ld pi = acos((ld) -1.0); void precalc() { } const int maxn = (int) 5e3 + 10; int n; int ls[maxn], rs[maxn]; int read() { if (scanf("%d", &n) < 1) { return 0; } for (int i = 0; i < n; ++i) { scanf("%d%d", ls + i, rs + i); } return 1; } pair<int, int> tosort[maxn]; long long dp[2][maxn]; void solve() { for (int i = 0; i < n; ++i) { tosort[i] = mp(ls[i] + rs[i], i); } sort(tosort, tosort + n); reverse(tosort, tosort + n); dp[0][0] = 0; dp[1][0] = (long long) 1e18; for (int iter = 0; iter < n; ++iter) { dp[0][iter + 1] = dp[1][iter + 1] = (long long) 1e18; for (int type = 1; type >= 0; --type) { for (int tl = iter; tl >= 0; --tl) { auto cur = dp[type][tl]; dp[type][tl + 1] = min(dp[type][tl + 1], cur + (long long) tl * tosort[iter].first + rs[tosort[iter].second]); if (!type && (n & 1)) { dp[1][tl] = min(dp[1][tl], cur + (long long) (n - 1) * tosort[iter].first / 2); } dp[type][tl] = cur + (long long) (iter - tl - type) * tosort[iter].first + ls[tosort[iter].second]; } } } long long res = *min_element(dp[0], dp[0] + n + 1); if (n & 1) { res = min(res, dp[1][n / 2]); } printf("%lld\n", res); } int main() { precalc(); #ifdef LOCAL freopen(TASK ".out", "w", stdout); assert(freopen(TASK ".in", "r", stdin)); #endif while (1) { if (!read()) { break; } solve(); #ifdef DEBUG eprintf("Time %.2f\n", (double) clock() / CLOCKS_PER_SEC); #endif } return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Intervals |
User | XraY |
Language | C++14 (GCC 5.4.1) |
Score | 1000 |
Code Size | 2122 Byte |
Status | AC |
Exec Time | 75 ms |
Memory | 384 KB |
Compile Error
./Main.cpp: In function ‘int read()’: ./Main.cpp:46:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", ls + i, rs + i); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1000 / 1000 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
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 | 75 ms | 384 KB |
001.txt | AC | 16 ms | 384 KB |
002.txt | AC | 75 ms | 384 KB |
003.txt | AC | 65 ms | 384 KB |
004.txt | AC | 75 ms | 384 KB |
005.txt | AC | 33 ms | 384 KB |
006.txt | AC | 75 ms | 384 KB |
007.txt | AC | 38 ms | 384 KB |
008.txt | AC | 75 ms | 384 KB |
009.txt | AC | 9 ms | 256 KB |
010.txt | AC | 75 ms | 384 KB |
011.txt | AC | 33 ms | 384 KB |
012.txt | AC | 75 ms | 384 KB |
013.txt | AC | 8 ms | 256 KB |
014.txt | AC | 75 ms | 384 KB |
015.txt | AC | 18 ms | 384 KB |
016.txt | AC | 75 ms | 384 KB |
017.txt | AC | 56 ms | 384 KB |
018.txt | AC | 75 ms | 384 KB |
019.txt | AC | 40 ms | 384 KB |
020.txt | AC | 3 ms | 256 KB |
021.txt | AC | 3 ms | 256 KB |
022.txt | AC | 75 ms | 384 KB |
023.txt | AC | 74 ms | 384 KB |
024.txt | AC | 75 ms | 384 KB |
025.txt | AC | 74 ms | 384 KB |
026.txt | AC | 75 ms | 384 KB |
027.txt | AC | 75 ms | 384 KB |
028.txt | AC | 75 ms | 384 KB |
029.txt | AC | 75 ms | 384 KB |
030.txt | AC | 75 ms | 384 KB |
031.txt | AC | 74 ms | 384 KB |
032.txt | AC | 75 ms | 384 KB |
033.txt | AC | 75 ms | 384 KB |
034.txt | AC | 75 ms | 384 KB |
035.txt | AC | 75 ms | 384 KB |
036.txt | AC | 75 ms | 384 KB |
037.txt | AC | 74 ms | 384 KB |
038.txt | AC | 75 ms | 384 KB |
039.txt | AC | 75 ms | 384 KB |
040.txt | AC | 75 ms | 384 KB |
041.txt | AC | 75 ms | 384 KB |
042.txt | AC | 75 ms | 384 KB |
example0.txt | AC | 3 ms | 256 KB |
example1.txt | AC | 3 ms | 256 KB |