#include <iostream> #include <vector> #include <algorithm> using namespace std; bool used[500005] = {false}; int main() { int numBottles, seqLen, numDistinct = 0; unsigned long long repeated = 0, totalJumps = 0; ios::sync_with_stdio(false); cin >> numBottles >> seqLen; vector<int> bottles(numBottles); for(int i=0; i<numBottles; ++i) { cin >> bottles[i]; if(used[bottles[i]]) { ++repeated; } else { used[bottles[i]] = true; totalJumps += repeated; ++numDistinct; } if(numDistinct == seqLen) break; } if(numDistinct == seqLen) cout << totalJumps << endl; else cout << "-1" << endl; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | #include <iostream> #include <vector> #include <algorithm> using namespace std; bool used[500005] = {false}; int main() { int numBottles, seqLen, numDistinct = 0; unsigned long long repeated = 0, totalJumps = 0; ios::sync_with_stdio(false); cin >> numBottles >> seqLen; vector<int> bottles(numBottles); for(int i=0; i<numBottles; ++i) { cin >> bottles[i]; if(used[bottles[i]]) { ++repeated; } else { used[bottles[i]] = true; totalJumps += repeated; ++numDistinct; } if(numDistinct == seqLen) break; } if(numDistinct == seqLen) cout << totalJumps << endl; else cout << "-1" << endl; return 0; } |