Submission #236750

#TimeUsernameProblemLanguageResultExecution timeMemory
236750VimmerKrov (COCI17_krov)C++14
84 / 140
1598 ms768 KiB
#include <bits/stdc++.h> //#include <ext/pb_ds/assoc_container.hpp> //#include <ext/pb_ds/tree_policy.hpp> #pragma GCC optimize("unroll-loops") #pragma GCC optimize("-O3") #pragma GCC optimize("Ofast") //#pragma GCC optimize("fast-math") //#pragma GCC optimize("no-stack-protector") #define F first #define S second #define sz(x) int(x.size()) #define pb push_back #define N 100001 #define M ll(1e9 + 7) #define inf 1e9 + 1e9 using namespace std; //using namespace __gnu_pbds; typedef long double ld; typedef long long ll; typedef unsigned long long ull; typedef short int si; typedef array <int, 2> a2; //typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; int n, a[N]; ll calc(ll x, int pos) { if (x - pos <= 0) return 1e18; ll sum = 0; for (register int i = 0; i < pos; i++) sum += abs(a[i] - (x - abs(pos - i))); for (register int i = pos + 1; i < n; i++) sum += abs(a[i] - (x - abs(pos - i))); return sum + abs(x - a[pos]); } int main() { //freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout); ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> n; for (int i = 0; i < n; i++) cin >> a[i]; ll ans = 1e18, pos; for (int i = 0; i <= 0; i++) { int l = 0, r = 1e9; while (l + 10 < r) { int mdl = l + (r - l) / 3; int mdr = r - (r - l) / 3; if (calc(mdl, i) > calc(mdr, i)) l = mdl; else r = mdr; } for (int x = l; x <= r; x++) { ll val = calc(x, i); if (ans > val) {ans = val; pos = x;} } } for (register int i = 1; i < n; i++) { for (register int x = pos - 5; x <= pos + 5; x++) { ll val = calc(x, i); if (ans > val) {ans = val; pos = x;} } } cout << ans; }

Compilation message (stderr)

krov.cpp: In function 'int main()':
krov.cpp:80:49: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
         for (register int x = pos - 5; x <= pos + 5; x++)
                                             ~~~~^~~
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