제출 #90303

#제출 시각아이디문제언어결과실행 시간메모리
90303YottaByte등산 경로 (IZhO12_route)C++14
0 / 100
2 ms380 KiB
#include <bits/stdc++.h> using namespace std; #define pb push_back #define mk make_pair #define fr first #define sc second #define ok puts("OK") #define int long long const int N = 1e6 + 2; int n, k, a[N]; main() { cin >> n >> k; for(int i = 1; i <= n; i++) { cin >> a[i]; } int diff = 0; a[0] = a[n]; a[n + 1] = a[1]; a[n + 2] = a[2]; for(int i = 1; i <= n; i++) { diff += abs(a[i] - a[i + 1]); } //cout << diff << endl; if(!diff) { cout << 0 << endl; return 0; } for(int q = 0; q < 1000; q++) { bool f = false; for(int i = 1; i <= n && k; i++) { if(a[i - 1] > a[i] && a[i] < a[i + 1]) { if(i == n) a[0]++; if(i == 1) a[n + 1]++; a[i]++; k--; f = true; } } if(!f) { if(k <= 1) break; for(int i = 1; i <= n; i++) { if(a[i - 1] < a[i] || a[i + 1] > a[i + 2]) continue; if(a[i] == a[i + 1]) { if(i == n) a[0]++; if(i + 1 == n) a[0]++; if(i == 1) a[n + 1]++; if(i + 1 == n + 1) a[1]++; a[i]++; a[i + 1]++; k -= 2; break; } } } //for(int i = 1; i <= n; i++) //cout << a[i] << " "; //puts(""); } int diff1 = 0; for(int i = 1; i <= n; i++) { diff1 += abs(a[i] - a[i + 1]); } cout << diff - diff1 << endl; } /* 3 2 1 2 1 7 1000 4 3 3 2 3 2 1 4 5 4 3 2 1 5 4 1 2 4 4 5 5 4 5 4 4 2 1 */

컴파일 시 표준 에러 (stderr) 메시지

route.cpp:14:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
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