| #include "testlib.h" |
| #include <iostream> |
| #include <vector> |
| #include <algorithm> |
| #include <set> |
|
|
| using namespace std; |
|
|
| set<int>s[5]; |
|
|
| int main(int argc, char *argv[]) { |
| |
| |
| |
| |
| |
| registerTestlibCmd(argc, argv); |
|
|
| int n = inf.readInt(); |
| for(int i = 1; i <= n; i++){ |
| s[1].insert(i); |
| } |
| int m = ouf.readInt(); |
| for(int i = 1; i <= m; i++){ |
| int a = ouf.readInt(1, 3), b = ouf.readInt(1, 3); |
| if(a == b)quitf(_wa, "Same basket"); |
| if(s[a].empty())quitf(_wa, "Empty basket a"); |
| int mida = (s[a].size()+2)/2; |
| set<int>::iterator it; |
| for(it = s[a].begin(); it != s[a].end(); it++){ |
| mida--; |
| if(mida == 0)break; |
| } |
| int val = (*it); |
| s[a].erase(val); |
| s[b].insert(val); |
| int midb = (s[b].size()+2)/2; |
| for(it = s[b].begin(); it != s[b].end(); it++){ |
| midb--; |
| if(midb == 0)break; |
| } |
| if((*it) != val)quitf(_wa, "Invalid target basket b on %d operation", i); |
| } |
| if(s[3].size()==n){ |
| int ref = ans.readInt(); |
| double score = (2.0*ref-1.0*m)/(1.0*ref); |
| if (score < 0) score = 0.0; |
| double unbounded_score = max(0.0, score); |
| score = min(score, 1.0); |
| score = max(score, 0.0); |
| quitp(score, "Ratio: %.3lf, RatioUnbounded: %.3lf", score, unbounded_score); |
| } |
| else quitf(_wa, "Invalid operation"); |
| } |
