#include <bits/stdc++.h> using namespace std; const int mxn = 1e5+5; int arr[mxn]; int suffmax[mxn]; int prefmin[mxn]; vector<int> range_ends; int main() { int n, k; scanf("%d%d",&n,&k); for(int i = 0; i < n; ++i){ scanf("%d",&arr[i]); } bool win = false; if(k > 2){ k--; // now k becomes the lines, not the ranges for(int i = n - 1; i >= 0; --i){ suffmax[i] = max(suffmax[i+1],arr[i]); } /* cout<<"suffmax: "<<endl; for (int i = 0; i < n; ++i) { cout<<suffmax[i]<<" "; }*/ suffmax[n] = -1; int sel1 = -1, sel2 = -1; for(int i = n - 1; i >= 0; --i){ if(suffmax[i+1] == -1) continue; if(suffmax[i+1] <= arr[i]){ win = true; // cout<<"found a win defining one at "<<i<<endl; range_ends.push_back(i + 1); sel1 = i + 1; k--; if(i-1 != 0){ range_ends.push_back(i-1 + 1); k--; sel2 = i-1 + 1; } break; } } if(!win){ printf("NIE"); return 0; } for(int i = 0; i < n; ++i){ if(k == 0){ // no more lines to insert break; } if(i+1 != sel1 && i+1 != sel2){ // if it is not any of the 2 winning lines we selected before range_ends.push_back(i+1); k--; } } }else if(k == 2){ // check if its non-increasing, if so - win guaranteed, put the line wherever bool noninc = true; for(int i = 0; i < n - 1; ++i){ if(arr[i] < arr[i+1]){ noninc = false; break; } } if(noninc){ //cout<<"its nonincreasing, so free win\n"; range_ends.push_back(1); }else{ //cout<<"its some rand shit with k=2 so searching for 1 wall\n"; for(int i = n - 1; i >= 0; --i){ suffmax[i] = max(suffmax[i+1],arr[i]); } for(int i = 0; i < n ; ++i){ if(i==0) prefmin[i] = arr[i]; else prefmin[i] = min(prefmin[i-1],arr[i]); } /*cout<<"prefmin: "<<endl; for (int i = 0; i < n; ++i) { cout<<prefmin[i]<<" "; }*/ win = true; for(int i = 0; i < n - 1; ++i){ if(prefmin[i] < suffmax[i+1]){ // cout<<"found position that works unf, at "<<i<<endl; win = false; break; } } if(!win){ printf("NIE"); return 0; } } } printf("TAK\n"); sort(range_ends.begin(), range_ends.end()); for(auto& a : range_ends){ printf("%d ", a); } 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | #include <bits/stdc++.h> using namespace std; const int mxn = 1e5+5; int arr[mxn]; int suffmax[mxn]; int prefmin[mxn]; vector<int> range_ends; int main() { int n, k; scanf("%d%d",&n,&k); for(int i = 0; i < n; ++i){ scanf("%d",&arr[i]); } bool win = false; if(k > 2){ k--; // now k becomes the lines, not the ranges for(int i = n - 1; i >= 0; --i){ suffmax[i] = max(suffmax[i+1],arr[i]); } /* cout<<"suffmax: "<<endl; for (int i = 0; i < n; ++i) { cout<<suffmax[i]<<" "; }*/ suffmax[n] = -1; int sel1 = -1, sel2 = -1; for(int i = n - 1; i >= 0; --i){ if(suffmax[i+1] == -1) continue; if(suffmax[i+1] <= arr[i]){ win = true; // cout<<"found a win defining one at "<<i<<endl; range_ends.push_back(i + 1); sel1 = i + 1; k--; if(i-1 != 0){ range_ends.push_back(i-1 + 1); k--; sel2 = i-1 + 1; } break; } } if(!win){ printf("NIE"); return 0; } for(int i = 0; i < n; ++i){ if(k == 0){ // no more lines to insert break; } if(i+1 != sel1 && i+1 != sel2){ // if it is not any of the 2 winning lines we selected before range_ends.push_back(i+1); k--; } } }else if(k == 2){ // check if its non-increasing, if so - win guaranteed, put the line wherever bool noninc = true; for(int i = 0; i < n - 1; ++i){ if(arr[i] < arr[i+1]){ noninc = false; break; } } if(noninc){ //cout<<"its nonincreasing, so free win\n"; range_ends.push_back(1); }else{ //cout<<"its some rand shit with k=2 so searching for 1 wall\n"; for(int i = n - 1; i >= 0; --i){ suffmax[i] = max(suffmax[i+1],arr[i]); } for(int i = 0; i < n ; ++i){ if(i==0) prefmin[i] = arr[i]; else prefmin[i] = min(prefmin[i-1],arr[i]); } /*cout<<"prefmin: "<<endl; for (int i = 0; i < n; ++i) { cout<<prefmin[i]<<" "; }*/ win = true; for(int i = 0; i < n - 1; ++i){ if(prefmin[i] < suffmax[i+1]){ // cout<<"found position that works unf, at "<<i<<endl; win = false; break; } } if(!win){ printf("NIE"); return 0; } } } printf("TAK\n"); sort(range_ends.begin(), range_ends.end()); for(auto& a : range_ends){ printf("%d ", a); } return 0; } |