Submission #71542

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
71542	2018-08-25 05:32:10	top34051	Shortcut (IOI16_shortcut)	C++17	71 / 100	808 ms	4488 KiB

shortcut

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#include "shortcut.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 3000 + 5;
const ll inf = 1e15;
int n;
ll cost, len[maxn], val[maxn];
ll pos[maxn];
bool check(ll k) {
//    printf("check %lld\n",k);
    double r1 = -inf, r2 = inf, c1 = -inf, c2 = inf;
    for(int x=0;x<n;x++) {
        for(int y=x+1;y<n;y++) {
            if(val[x] + val[y] + pos[y] - pos[x] <= k) continue;
            ll d = k - cost - val[x] - val[y];
//            double r1 = (pos[x] + pos[y] - d)/(2.0*sqrt(2)), c1 = (-pos[x] + pos[y] - d)/(2.0*sqrt(2));
//            double r2 = (pos[x] + pos[y] + d)/(2.0*sqrt(2)), c2 = (-pos[x] + pos[y] + d)/(2.0*sqrt(2));
//            printf("%d %d: (%.3lf, %.3lf) (%.3lf, %.3lf)\n",x,y,r1,c1,r2,c2);
            r1 = max(r1, (pos[x] + pos[y] - d)/(2.0*sqrt(2)));
            c1 = max(c1, (-pos[x] + pos[y] - d)/(2.0*sqrt(2)));
            r2 = min(r2, (pos[x] + pos[y] + d)/(2.0*sqrt(2)));
            c2 = min(c2, (-pos[x] + pos[y] + d)/(2.0*sqrt(2)));
        }
    }
    for(int x=0;x<n;x++) {
        for(int y=x+1;y<n;y++) {
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 14 / 14
• Subtask 3: 8 / 8
• Subtask 4: 7 / 7
• Subtask 5: 33 / 33
• Subtask 6: 0 / 22
• Subtask 7: 0 / 4
• Subtask 8: 0 / 3