#include <stdio.h> #define P(x) x int sequence[1000000]; int min2[1000000]; int max2[1000000]; int result[1000000]; int n, k; void solve2() { min2[0] = sequence[0]; for(int i=1; i<n; i++){ min2[i] = min2[i-1]; if(min2[i] > sequence[i]) min2[i] = sequence[i]; } max2[n-1] = sequence[n-1]; for(int i=n-2; i>=0; i--){ max2[i] = max2[i+1]; if(max2[i] < sequence[i]) max2[i] = sequence[i]; } for(int i=0; i<n-1; i++) if(min2[i] >= max2[i+1]){ printf("TAK\n"); P(printf("%d\n", i+1)); return; } printf("NIE\n"); } void solve3() { //pair on edges - TAK if(sequence[0] == sequence[1]) { printf("TAK\n"); P(printf("%d %d\n", 1, 2)); return; } else if(sequence[n-1] == sequence[n-2]) { printf("TAK\n"); P(printf("%d %d\n", n-2, n-1)); return; } int lastMin = sequence[0]; int lastMinIdx = 0; for(int i=0; i < n; i++) { if(lastMin >= sequence[i]){ lastMin = sequence[i]; lastMinIdx = i; } } if(lastMinIdx > 0) { printf("TAK\n"); if(lastMinIdx < n-1) P(printf("%d %d\n", lastMinIdx, lastMinIdx+1)); else P(printf("%d %d\n", lastMinIdx-1, lastMinIdx)); return; } int firstMax = sequence[0]; int firstMaxIdx = 0; for(int i=0; i < n; i++) { if(firstMax < sequence[i]){ firstMax = sequence[i]; firstMaxIdx = i; } } if(firstMaxIdx < n-1) { printf("TAK\n"); if(firstMaxIdx > 0) P(printf("%d %d\n", firstMaxIdx, firstMaxIdx+1)); else P(printf("%d %d\n", firstMaxIdx+1, firstMaxIdx+2));//1 2 return; } printf("NIE\n"); } void fillResult() { for(int i=0; i<k-1; i++) result[i] = i+1; } void printResult() { for(int i=0; i<k-1; i++) printf("%d ", result[i]); printf("\n"); } void solveAbove3(){ int prev = sequence[0]; for(int i=1; i < n; i++) { if(prev >= sequence[i]){ //three i-1 i i+1 printf("TAK\n"); fillResult(); if(result[k-2] < i+1) { result[k-2] = i+1; result[k-3] = i; result[k-4] = i-1; } P(printResult()); return; } prev = sequence[i]; } printf("NIE\n"); } int main() { scanf("%d", &n); scanf("%d", &k); for(int i=0; i < n; i++) { int a; scanf("%d ", &a); sequence[i] = a; } if(k==2) solve2(); else if(k==3) solve3(); else if(k>=4) solveAbove3(); 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 | #include <stdio.h> #define P(x) x int sequence[1000000]; int min2[1000000]; int max2[1000000]; int result[1000000]; int n, k; void solve2() { min2[0] = sequence[0]; for(int i=1; i<n; i++){ min2[i] = min2[i-1]; if(min2[i] > sequence[i]) min2[i] = sequence[i]; } max2[n-1] = sequence[n-1]; for(int i=n-2; i>=0; i--){ max2[i] = max2[i+1]; if(max2[i] < sequence[i]) max2[i] = sequence[i]; } for(int i=0; i<n-1; i++) if(min2[i] >= max2[i+1]){ printf("TAK\n"); P(printf("%d\n", i+1)); return; } printf("NIE\n"); } void solve3() { //pair on edges - TAK if(sequence[0] == sequence[1]) { printf("TAK\n"); P(printf("%d %d\n", 1, 2)); return; } else if(sequence[n-1] == sequence[n-2]) { printf("TAK\n"); P(printf("%d %d\n", n-2, n-1)); return; } int lastMin = sequence[0]; int lastMinIdx = 0; for(int i=0; i < n; i++) { if(lastMin >= sequence[i]){ lastMin = sequence[i]; lastMinIdx = i; } } if(lastMinIdx > 0) { printf("TAK\n"); if(lastMinIdx < n-1) P(printf("%d %d\n", lastMinIdx, lastMinIdx+1)); else P(printf("%d %d\n", lastMinIdx-1, lastMinIdx)); return; } int firstMax = sequence[0]; int firstMaxIdx = 0; for(int i=0; i < n; i++) { if(firstMax < sequence[i]){ firstMax = sequence[i]; firstMaxIdx = i; } } if(firstMaxIdx < n-1) { printf("TAK\n"); if(firstMaxIdx > 0) P(printf("%d %d\n", firstMaxIdx, firstMaxIdx+1)); else P(printf("%d %d\n", firstMaxIdx+1, firstMaxIdx+2));//1 2 return; } printf("NIE\n"); } void fillResult() { for(int i=0; i<k-1; i++) result[i] = i+1; } void printResult() { for(int i=0; i<k-1; i++) printf("%d ", result[i]); printf("\n"); } void solveAbove3(){ int prev = sequence[0]; for(int i=1; i < n; i++) { if(prev >= sequence[i]){ //three i-1 i i+1 printf("TAK\n"); fillResult(); if(result[k-2] < i+1) { result[k-2] = i+1; result[k-3] = i; result[k-4] = i-1; } P(printResult()); return; } prev = sequence[i]; } printf("NIE\n"); } int main() { scanf("%d", &n); scanf("%d", &k); for(int i=0; i < n; i++) { int a; scanf("%d ", &a); sequence[i] = a; } if(k==2) solve2(); else if(k==3) solve3(); else if(k>=4) solveAbove3(); return 0; } |