oj.uz

Submission #113760

# Submission time Handle Problem Language Result Execution time Memory
113760 2019-05-28T07:28:04 Z Diuven Bulldozer (JOI17_bulldozer) C++14
100 / 100
 1450 ms 48092 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long lint;
typedef pair<int, int> pii;

const int MAX = 2019;

int n, X[MAX], Y[MAX], V[MAX];

inline lint _max(lint a, lint b){ return a<b ? b : a; }

class Seg_t{
	struct node {
		lint ls, rs, ms, su;
		node operator + (const node &op) const {
			node res = {0,0,0,0};
			// ls, rs should not be empty.
			// ms may be empty
			res.ls = _max(ls, su+op.ls);
			res.rs = _max(op.rs, op.su+rs);
			res.ms = _max(rs+op.ls, _max(ms, op.ms));
			res.su = su + op.su;
			return res;
		}
    } T[4096];
	void upt(int v, int s, int e, int p, int x){
		if(s==e){ T[v]={x,x,_max(0,x),x}; return; }
        int mid = (s+e)/2;
        if(p<=mid) upt(v*2,s,(s+e)/2,p,x);
        else upt(v*2+1,(s+e)/2+1,e,p,x);
		T[v] = T[v*2]+T[v*2+1];
	}
  public:
    void upt(int p, int x){ upt(1,1,n,p,x); }
	lint get(){ return T[1].ms; }
} Seg;

int nu[MAX], re[MAX];
void ch(int a, int b){
	int i=re[a], j=re[b];
	Seg.upt(i, V[b]), Seg.upt(j, V[a]);
	swap(nu[i], nu[j]); swap(re[a], re[b]);
}
pii D[MAX][MAX];

int cmp(pii a, pii b){
    int u,v, s,t; tie(u,v)=a, tie(s,t)=b;
    pii l1=D[a.first][a.second], l2=D[b.first][b.second];
    lint w = 1LL*l1.second*l2.first - 1LL*l1.first*l2.second;
    return w==0 ? 0 : (w<0 ? -1 : 1);
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0);

	cin>>n;
	for(int i=1; i<=n; i++) cin>>X[i]>>Y[i]>>V[i];
    int rnk[MAX], tmp[MAX];
    iota(tmp+1, tmp+n+1, 1);
    sort(tmp+1, tmp+n+1, [](int a, int b){ return pii(-X[a],Y[a]) < pii(-X[b],Y[b]); });
    for(int i=1; i<=n; i++) rnk[tmp[i]]=i;

	iota(nu+1, nu+n+1, 1);
	sort(nu+1, nu+n+1, [&](int a, int b){
        return rnk[a]>rnk[b];
	});
	for(int i=1; i<=n; i++){
		Seg.upt(i, V[nu[i]]);
		re[nu[i]]=i;
	}

    vector<pii> P;

    for(int i=1; i<=n; i++) for(int j=i+1; j<=n; j++){
        P.emplace_back(i,j);
        int dx=X[i]-X[j], dy=Y[i]-Y[j];
        if(dx<0 || (dx==0 && dy>0)) dx=-dx, dy=-dy;
        D[i][j] = D[j][i] = {dx,dy};
    }

    sort(P.begin(), P.end(), [&](pii a, pii b){
        int z = cmp(a,b);
        if(z!=0) return z<0;
        
        int u,v, t,s; tie(u,v)=a, tie(t,s)=b;
        lint dx,dy; tie(dx,dy) = D[u][v];

        lint ub = -dy*X[u] + dx*Y[u];
        lint tb = -dy*X[t] + dx*Y[t];
        if(ub!=tb) return ub<tb;

        pii p={rnk[u],rnk[v]}, q={rnk[t],rnk[s]};
        if(p.first>p.second) swap(p.first, p.second);
        if(q.first>q.second) swap(q.first, q.second);
        return p<q;
    });

	lint ans = Seg.get();

    for(int i=0; i<int(P.size());){
        pii st = P[i];
        while(i<int(P.size()) && cmp(st, P[i])==0){
            ch(P[i].first, P[i].second); i++;
        }
        ans = _max(ans, Seg.get());
    }

	cout<<ans<<'\n';

	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 4 ms 1024 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 3 ms 896 KB Output is correct
9 Correct 4 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 896 KB Output is correct
2 Correct 4 ms 1024 KB Output is correct
3 Correct 3 ms 896 KB Output is correct
4 Correct 4 ms 920 KB Output is correct
5 Correct 3 ms 1024 KB Output is correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 4 ms 1024 KB Output is correct
8 Correct 4 ms 1024 KB Output is correct
9 Correct 3 ms 896 KB Output is correct
10 Correct 3 ms 1024 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 3 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 3 ms 1024 KB Output is correct
25 Correct 3 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 1024 KB Output is correct
30 Correct 3 ms 896 KB Output is correct
31 Correct 3 ms 896 KB Output is correct
32 Correct 4 ms 1024 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 896 KB Output is correct
2 Correct 4 ms 1024 KB Output is correct
3 Correct 3 ms 896 KB Output is correct
4 Correct 4 ms 920 KB Output is correct
5 Correct 3 ms 1024 KB Output is correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 4 ms 1024 KB Output is correct
8 Correct 4 ms 1024 KB Output is correct
9 Correct 3 ms 896 KB Output is correct
10 Correct 3 ms 1024 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 3 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 3 ms 1024 KB Output is correct
25 Correct 3 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 1024 KB Output is correct
30 Correct 3 ms 896 KB Output is correct
31 Correct 3 ms 896 KB Output is correct
32 Correct 4 ms 1024 KB Output is correct
33 Correct 1408 ms 47972 KB Output is correct
34 Correct 1321 ms 47968 KB Output is correct
35 Correct 1384 ms 47900 KB Output is correct
36 Correct 1371 ms 47952 KB Output is correct
37 Correct 1314 ms 47964 KB Output is correct
38 Correct 1340 ms 47988 KB Output is correct
39 Correct 1351 ms 47852 KB Output is correct
40 Correct 1285 ms 47932 KB Output is correct
41 Correct 1358 ms 47936 KB Output is correct
42 Correct 1309 ms 47936 KB Output is correct
43 Correct 1165 ms 48064 KB Output is correct
44 Correct 1166 ms 47936 KB Output is correct
45 Correct 1156 ms 47936 KB Output is correct
46 Correct 1171 ms 47936 KB Output is correct
47 Correct 1199 ms 47912 KB Output is correct
48 Correct 1205 ms 47936 KB Output is correct
49 Correct 1263 ms 48068 KB Output is correct
50 Correct 1311 ms 47936 KB Output is correct
51 Correct 1265 ms 47936 KB Output is correct
52 Correct 1236 ms 48012 KB Output is correct
53 Correct 1232 ms 47876 KB Output is correct
54 Correct 1239 ms 47936 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 896 KB Output is correct
2 Correct 4 ms 1024 KB Output is correct
3 Correct 3 ms 896 KB Output is correct
4 Correct 4 ms 920 KB Output is correct
5 Correct 3 ms 1024 KB Output is correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 4 ms 1024 KB Output is correct
8 Correct 4 ms 1024 KB Output is correct
9 Correct 3 ms 896 KB Output is correct
10 Correct 3 ms 1024 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 3 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 3 ms 1024 KB Output is correct
25 Correct 3 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 1024 KB Output is correct
30 Correct 3 ms 896 KB Output is correct
31 Correct 3 ms 896 KB Output is correct
32 Correct 4 ms 1024 KB Output is correct
33 Correct 1408 ms 47972 KB Output is correct
34 Correct 1321 ms 47968 KB Output is correct
35 Correct 1384 ms 47900 KB Output is correct
36 Correct 1371 ms 47952 KB Output is correct
37 Correct 1314 ms 47964 KB Output is correct
38 Correct 1340 ms 47988 KB Output is correct
39 Correct 1351 ms 47852 KB Output is correct
40 Correct 1285 ms 47932 KB Output is correct
41 Correct 1358 ms 47936 KB Output is correct
42 Correct 1309 ms 47936 KB Output is correct
43 Correct 1165 ms 48064 KB Output is correct
44 Correct 1166 ms 47936 KB Output is correct
45 Correct 1156 ms 47936 KB Output is correct
46 Correct 1171 ms 47936 KB Output is correct
47 Correct 1199 ms 47912 KB Output is correct
48 Correct 1205 ms 47936 KB Output is correct
49 Correct 1263 ms 48068 KB Output is correct
50 Correct 1311 ms 47936 KB Output is correct
51 Correct 1265 ms 47936 KB Output is correct
52 Correct 1236 ms 48012 KB Output is correct
53 Correct 1232 ms 47876 KB Output is correct
54 Correct 1239 ms 47936 KB Output is correct
55 Correct 1353 ms 47884 KB Output is correct
56 Correct 1388 ms 47936 KB Output is correct
57 Correct 1450 ms 47896 KB Output is correct
58 Correct 1373 ms 47932 KB Output is correct
59 Correct 1361 ms 48044 KB Output is correct
60 Correct 1312 ms 47936 KB Output is correct
61 Correct 1331 ms 47944 KB Output is correct
62 Correct 1327 ms 47856 KB Output is correct
63 Correct 1302 ms 47968 KB Output is correct
64 Correct 1335 ms 48060 KB Output is correct
65 Correct 1288 ms 47904 KB Output is correct
66 Correct 1279 ms 47932 KB Output is correct
67 Correct 1351 ms 47888 KB Output is correct
68 Correct 1355 ms 47936 KB Output is correct
69 Correct 1376 ms 48048 KB Output is correct
70 Correct 1385 ms 47984 KB Output is correct
71 Correct 1385 ms 47876 KB Output is correct
72 Correct 1304 ms 47936 KB Output is correct
73 Correct 1333 ms 47980 KB Output is correct
74 Correct 1293 ms 48040 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 4 ms 1024 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 3 ms 896 KB Output is correct
9 Correct 4 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 896 KB Output is correct
17 Correct 4 ms 1024 KB Output is correct
18 Correct 3 ms 896 KB Output is correct
19 Correct 4 ms 920 KB Output is correct
20 Correct 3 ms 1024 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 4 ms 1024 KB Output is correct
23 Correct 4 ms 1024 KB Output is correct
24 Correct 3 ms 896 KB Output is correct
25 Correct 3 ms 1024 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 2 ms 384 KB Output is correct
35 Correct 2 ms 384 KB Output is correct
36 Correct 3 ms 896 KB Output is correct
37 Correct 3 ms 896 KB Output is correct
38 Correct 4 ms 896 KB Output is correct
39 Correct 3 ms 1024 KB Output is correct
40 Correct 3 ms 896 KB Output is correct
41 Correct 4 ms 896 KB Output is correct
42 Correct 4 ms 896 KB Output is correct
43 Correct 4 ms 896 KB Output is correct
44 Correct 4 ms 1024 KB Output is correct
45 Correct 3 ms 896 KB Output is correct
46 Correct 3 ms 896 KB Output is correct
47 Correct 4 ms 1024 KB Output is correct
48 Correct 1408 ms 47972 KB Output is correct
49 Correct 1321 ms 47968 KB Output is correct
50 Correct 1384 ms 47900 KB Output is correct
51 Correct 1371 ms 47952 KB Output is correct
52 Correct 1314 ms 47964 KB Output is correct
53 Correct 1340 ms 47988 KB Output is correct
54 Correct 1351 ms 47852 KB Output is correct
55 Correct 1285 ms 47932 KB Output is correct
56 Correct 1358 ms 47936 KB Output is correct
57 Correct 1309 ms 47936 KB Output is correct
58 Correct 1165 ms 48064 KB Output is correct
59 Correct 1166 ms 47936 KB Output is correct
60 Correct 1156 ms 47936 KB Output is correct
61 Correct 1171 ms 47936 KB Output is correct
62 Correct 1199 ms 47912 KB Output is correct
63 Correct 1205 ms 47936 KB Output is correct
64 Correct 1263 ms 48068 KB Output is correct
65 Correct 1311 ms 47936 KB Output is correct
66 Correct 1265 ms 47936 KB Output is correct
67 Correct 1236 ms 48012 KB Output is correct
68 Correct 1232 ms 47876 KB Output is correct
69 Correct 1239 ms 47936 KB Output is correct
70 Correct 1353 ms 47884 KB Output is correct
71 Correct 1388 ms 47936 KB Output is correct
72 Correct 1450 ms 47896 KB Output is correct
73 Correct 1373 ms 47932 KB Output is correct
74 Correct 1361 ms 48044 KB Output is correct
75 Correct 1312 ms 47936 KB Output is correct
76 Correct 1331 ms 47944 KB Output is correct
77 Correct 1327 ms 47856 KB Output is correct
78 Correct 1302 ms 47968 KB Output is correct
79 Correct 1335 ms 48060 KB Output is correct
80 Correct 1288 ms 47904 KB Output is correct
81 Correct 1279 ms 47932 KB Output is correct
82 Correct 1351 ms 47888 KB Output is correct
83 Correct 1355 ms 47936 KB Output is correct
84 Correct 1376 ms 48048 KB Output is correct
85 Correct 1385 ms 47984 KB Output is correct
86 Correct 1385 ms 47876 KB Output is correct
87 Correct 1304 ms 47936 KB Output is correct
88 Correct 1333 ms 47980 KB Output is correct
89 Correct 1293 ms 48040 KB Output is correct
90 Correct 1307 ms 48036 KB Output is correct
91 Correct 1330 ms 47976 KB Output is correct
92 Correct 1309 ms 48028 KB Output is correct
93 Correct 1314 ms 47976 KB Output is correct
94 Correct 1342 ms 47888 KB Output is correct
95 Correct 1335 ms 47868 KB Output is correct
96 Correct 1406 ms 47932 KB Output is correct
97 Correct 1337 ms 48064 KB Output is correct
98 Correct 1312 ms 48092 KB Output is correct
99 Correct 1355 ms 47892 KB Output is correct
100 Correct 1218 ms 47912 KB Output is correct
101 Correct 1299 ms 47972 KB Output is correct
102 Correct 1362 ms 47936 KB Output is correct
103 Correct 1315 ms 47936 KB Output is correct
104 Correct 1295 ms 47936 KB Output is correct
105 Correct 1346 ms 47892 KB Output is correct
106 Correct 1296 ms 48036 KB Output is correct
107 Correct 1285 ms 47908 KB Output is correct
108 Correct 1288 ms 47884 KB Output is correct
109 Correct 1333 ms 48000 KB Output is correct
110 Correct 1035 ms 47936 KB Output is correct
111 Correct 1030 ms 47936 KB Output is correct
112 Correct 973 ms 47936 KB Output is correct
113 Correct 974 ms 47936 KB Output is correct
114 Correct 956 ms 47936 KB Output is correct
115 Correct 980 ms 47844 KB Output is correct
116 Correct 960 ms 47992 KB Output is correct
117 Correct 994 ms 47948 KB Output is correct
118 Correct 960 ms 47900 KB Output is correct
119 Correct 997 ms 47936 KB Output is correct
120 Correct 2 ms 384 KB Output is correct
121 Correct 2 ms 384 KB Output is correct
122 Correct 1290 ms 47940 KB Output is correct
123 Correct 1265 ms 48064 KB Output is correct
124 Correct 1255 ms 47932 KB Output is correct
125 Correct 1224 ms 48048 KB Output is correct
126 Correct 1205 ms 48012 KB Output is correct
127 Correct 1232 ms 47932 KB Output is correct
128 Correct 1162 ms 47940 KB Output is correct
129 Correct 1242 ms 47936 KB Output is correct
130 Correct 1241 ms 47936 KB Output is correct
131 Correct 1217 ms 47968 KB Output is correct
132 Correct 1200 ms 47904 KB Output is correct
133 Correct 1305 ms 47936 KB Output is correct