Submission #421496

#	Time	Username	Problem	Language	Result	Execution time	Memory
421496		balbit	Shortcut (IOI16_shortcut)	C++14	23 / 100	2084 ms	356 KiB

shortcut

#include "shortcut.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pii pair <int, int >
#define f first
#define s second

#define MX(a,b) a = max(a,b)
#define MN(a,b) a = min(a,b)

#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())

#ifdef BALBIT
#define bug(...) cerr<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<"- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T && x, S && ...y) {cerr<<x<<", "; _do(y...);}
#else
#define bug(...)
#endif // BALBIT


#define pb push_back
#define REP(i,n) for (int i = 0; i<(n); ++i)
#define REP1(i,n) for (int i = 1; i<=(n); ++i)


const int maxn = 1e6+5;
ll p[maxn];
ll d[maxn];
int C;

ll gt(int a, int b, int x, int y) {
    if (a>b) swap(a,b);
    if (x>y) swap(x,y);
    return d[x] + d[y] + min((p[y] - p[x]), C + abs(p[x] - p[a]) + abs(p[y]-p[b]));
}

long long find_shortcut(int n, std::vector<int> l, std::vector<int> _d, int _c)
{
    C = _c;
    p[0] = 0;
    REP(i,n) d[i] =_d[i];
    for (int i = 1; i<n; ++i) {
        p[i] = l[i-1] + p[i-1];
    }
    ll re = 1ll<<62;
    REP(b,n) REP(a,b) {
        ll t = 0;
        REP(y,n) REP(x,y) {
            MX(t, gt(a,b,x,y));
        }
        MN(re, t);
    }
    return re;
}



//
//signed main(){
//    ll hi = find_shortcut(9, {10, 10, 10, 10, 10, 10, 10, 10},
//{20, 0, 30, 0, 0, 40, 0, 40, 0}, 30);
//    bug(hi);
//}

• Subtask 1: 9 / 9
• Subtask 2: 14 / 14
• Subtask 3: 0 / 8
• Subtask 4: 0 / 7
• Subtask 5: 0 / 33
• Subtask 6: 0 / 22
• Subtask 7: 0 / 4
• Subtask 8: 0 / 3