Submission #3451768
Source Code Expand
#include <iostream> #include <string> #include <algorithm> #include <vector> #include <map> using namespace std; typedef long long ll; #define rep(i,s,n)for(ll i=s;i<n;i++) #define repe(i,s,n)for(ll i=s;i<=n;i++) static const ll MOD = 1e9 + 7; ll n, k; double w[1000]; double p[1000]; double y[1000]; bool condition(double m) { rep(i, 0, n) { y[i] = (w[i] * p[i] - m * w[i]) / 100; } sort(y, y + n); reverse(y, y + n); double sum = 0; rep(i, 0, k) { sum += y[i]; } return sum >= 0; } int main() { cin >> n >> k; rep(i, 0, n)cin >> w[i] >> p[i]; double r = 100000; double l = -1; double m; rep(k, 0, 10000) { m = (l + r) / 2; if (condition(m)) { l = m; } else { r = m; } } printf("%.10f", r); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - 食塩水 |
User | butanokakuni_d1 |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 799 Byte |
Status | AC |
Exec Time | 280 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 100 / 100 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s0.txt, s1.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, s0.txt, s1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 267 ms | 256 KB |
001.txt | AC | 18 ms | 256 KB |
002.txt | AC | 257 ms | 256 KB |
003.txt | AC | 23 ms | 256 KB |
004.txt | AC | 269 ms | 256 KB |
005.txt | AC | 263 ms | 256 KB |
006.txt | AC | 275 ms | 256 KB |
007.txt | AC | 201 ms | 256 KB |
008.txt | AC | 273 ms | 256 KB |
009.txt | AC | 18 ms | 256 KB |
010.txt | AC | 265 ms | 256 KB |
011.txt | AC | 96 ms | 256 KB |
012.txt | AC | 280 ms | 256 KB |
013.txt | AC | 88 ms | 256 KB |
014.txt | AC | 271 ms | 256 KB |
015.txt | AC | 184 ms | 256 KB |
016.txt | AC | 273 ms | 256 KB |
017.txt | AC | 127 ms | 256 KB |
018.txt | AC | 261 ms | 256 KB |
019.txt | AC | 145 ms | 256 KB |
s0.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 2 ms | 256 KB |