oj.uz

Submission #787588

# Submission time Handle Problem Language Result Execution time Memory
787588 2023-07-19T09:58:27 Z vnm06 Horses (IOI15_horses) C++14
100 / 100
 613 ms 55504 KB 
#include "horses.h"
#include<bits/stdc++.h>
using namespace std;

long long mod=1e9+7;
int n;
int a[500005];
set<int> st;

long long ost[2000005];
int tree[2000005];

void update(int v, int le, int ri, int idx, int val)
{
    if(le==ri) {tree[v]=val; return;}
    int mid=(le+ri)/2;
    if(idx<=mid) update(2*v, le, mid, idx, val);
    else update(2*v+1, mid+1, ri, idx, val);
    tree[v]=max(tree[2*v], tree[2*v+1]);
}
int query(int v, int le, int ri, int be, int en)
{
    if(en<be) return 0;
    if(le>en || ri<be) return 0;
    if(be<=le && ri<=en) return tree[v];
    int mid=(le+ri)/2;
    return max(query(2*v, le, mid, be, en), query(2*v+1, mid+1, ri, be, en));
}

void update2(int v, int le, int ri, int idx, int val)
{
    if(le==ri) {ost[v]=val; return;}
    int mid=(le+ri)/2;
    if(idx<=mid) update2(2*v, le, mid, idx, val);
    else update2(2*v+1, mid+1, ri, idx, val);
    ost[v]=(ost[2*v]*ost[2*v+1])%mod;
}
long long query2(int v, int le, int ri, int be, int en)
{
    if(en<be) return 1;
    if(le>en || ri<be) return 1;
    if(be<=le && ri<=en) return ost[v];
    int mid=(le+ri)/2;
    return (query2(2*v, le, mid, be, en)*query2(2*v+1, mid+1, ri, be, en))%mod;
}


int spc[50], cf[50], brt=0;

long long solve()
{
    brt=0;
    long long ccf=1;
    if(st.empty()) return query(1, 0, n-1, 0, n-1);
    set<int>::iterator it=st.begin();
    while(it!=st.end())
    {
        spc[brt]=-(*it);
        cf[brt]=a[-(*it)];
        brt++;
        ccf*=a[-(*it)];
        it++;
        if(ccf>1e9) break;
    }
    reverse(spc, spc+brt);
    reverse(cf, cf+brt);
    long long ans=0, id=0;
    if(ccf<=1e9) ans=query(1, 0, n-1, 0, n-1);
    long long rc=1;
    for(int i=0; i<brt; i++)
    {
        if(i || ccf<=1e9) rc*=cf[i];
        long long tz=query(1, 0, n-1, spc[i], n-1);
        if(ans<tz*rc) ans=tz*rc;
    }
    if(ccf<=1e9) return ans%mod;
    return ((ans%mod)*query2(1, 0, n-1, 0, spc[0]))%mod;
}


int init(int N, int X[], int Y[])
{
    n=N;
    for(int i=0; i<n; i++)
    {
        update(1, 0, n-1, i, Y[i]);
        update2(1, 0, n-1, i, X[i]);
        a[i]=X[i];
        if(a[i]>1) st.insert(-i);
    }
	return solve();
}

int updateX(int pos, int val)
{
    if(a[pos]==1 && val>1) st.insert(-pos);
    else if(a[pos]>1 && val==1) st.erase(-pos);
    update2(1, 0, n-1, pos, val);
    a[pos]=val;
	return solve();
}

int updateY(int pos, int val)
{
    update(1, 0, n-1, pos, val);
	return solve();
}

Compilation message

horses.cpp: In function 'long long int solve()':
horses.cpp:63:12: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   63 |         if(ccf>1e9) break;
      |            ^~~
horses.cpp:68:8: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   68 |     if(ccf<=1e9) ans=query(1, 0, n-1, 0, n-1);
      |        ^~~
horses.cpp:72:17: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   72 |         if(i || ccf<=1e9) rc*=cf[i];
      |                 ^~~
horses.cpp:76:8: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   76 |     if(ccf<=1e9) return ans%mod;
      |        ^~~
horses.cpp:67:22: warning: unused variable 'id' [-Wunused-variable]
   67 |     long long ans=0, id=0;
      |                      ^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:91:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   91 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:100:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  100 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:106:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  106 |  return solve();
      |         ~~~~~^~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 3 ms 372 KB Output is correct
28 Correct 2 ms 328 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 595 ms 43152 KB Output is correct
2 Correct 385 ms 42956 KB Output is correct
3 Correct 345 ms 46760 KB Output is correct
4 Correct 368 ms 50572 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 3 ms 324 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 328 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 167 ms 22616 KB Output is correct
34 Correct 169 ms 22604 KB Output is correct
35 Correct 286 ms 52936 KB Output is correct
36 Correct 255 ms 52768 KB Output is correct
37 Correct 192 ms 20784 KB Output is correct
38 Correct 203 ms 33552 KB Output is correct
39 Correct 156 ms 20524 KB Output is correct
40 Correct 248 ms 47980 KB Output is correct
41 Correct 175 ms 20556 KB Output is correct
42 Correct 194 ms 20584 KB Output is correct
43 Correct 234 ms 48336 KB Output is correct
44 Correct 258 ms 48248 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 1 ms 388 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct
33 Correct 613 ms 46720 KB Output is correct
34 Correct 345 ms 55504 KB Output is correct
35 Correct 338 ms 46628 KB Output is correct
36 Correct 387 ms 50696 KB Output is correct
37 Correct 165 ms 22604 KB Output is correct
38 Correct 168 ms 22616 KB Output is correct
39 Correct 291 ms 52928 KB Output is correct
40 Correct 264 ms 52864 KB Output is correct
41 Correct 187 ms 20776 KB Output is correct
42 Correct 271 ms 33544 KB Output is correct
43 Correct 157 ms 20520 KB Output is correct
44 Correct 254 ms 47996 KB Output is correct
45 Correct 203 ms 20552 KB Output is correct
46 Correct 185 ms 20580 KB Output is correct
47 Correct 258 ms 48332 KB Output is correct
48 Correct 233 ms 48284 KB Output is correct
49 Correct 279 ms 25612 KB Output is correct
50 Correct 272 ms 25616 KB Output is correct
51 Correct 388 ms 54804 KB Output is correct
52 Correct 365 ms 54280 KB Output is correct
53 Correct 542 ms 23924 KB Output is correct
54 Correct 373 ms 37424 KB Output is correct
55 Correct 218 ms 21628 KB Output is correct
56 Correct 358 ms 49688 KB Output is correct
57 Correct 418 ms 22248 KB Output is correct
58 Correct 557 ms 22648 KB Output is correct
59 Correct 251 ms 48272 KB Output is correct