oj.uz

Submission #621348

# Submission time Handle Problem Language Result Execution time Memory
621348 2022-08-03T17:53:41 Z A_D Horses (IOI15_horses) C++14
57 / 100
 1500 ms 65488 KB 
#include "horses.h"

#include <bits/stdc++.h>

using namespace std;

const int N=1e6+100;
const long long MOD=1e9+7;
const long long L=32;
long long x[N];
long long y[N];
set<int> st;
int n;
vector<int> vec;
long long seg[4*N];
long long seg2[4*N];

void build(int p,int s,int e)
{
    if(s==e){
        seg[p]=y[s];
        seg2[p]=x[s];
        return;
    }
    int mid=(s+e)/2;
    build(p*2,s,mid);
    build(p*2+1,mid+1,e);
    seg[p]=max(seg[p*2],seg[p*2+1]);
    seg2[p]=(seg2[p*2]*seg2[p*2+1])%MOD;
}

void update(int p,int s,int e,int i,int val)
{
    if(s==e){
        seg[p]=val;
        return;
    }
    int mid=(s+e)/2;
    if(i<=mid){
        update(p*2,s,mid,i,val);
    }
    else{
        update(p*2+1,mid+1,e,i,val);
    }
    seg[p]=max(seg[p*2],seg[p*2+1]);
}

void update2(int p,int s,int e,int i,int val)
{
    if(s==e){
        seg2[p]=val;
        return;
    }
    int mid=(s+e)/2;
    if(i<=mid){
        update2(p*2,s,mid,i,val);
    }
    else{
        update2(p*2+1,mid+1,e,i,val);
    }
    seg2[p]=(seg2[p*2]*seg2[p*2+1])%MOD;
}

long long get(int p,int s,int e,int a,int b)
{
    if(a<=s&&e<=b){
        return seg[p];
    }
    if(s>b||e<a)return 1;
    int mid=(s+e)/2;
    return max(get(p*2,s,mid,a,b),get(p*2+1,mid+1,e,a,b));
}

long long get2(int p,int s,int e,int a,int b)
{
    if(b==-1)return 1;
    if(a<=s&&e<=b){
        return seg2[p];
    }
    if(s>b||e<a)return 1;
    int mid=(s+e)/2;
    return (get2(p*2,s,mid,a,b)*get2(p*2+1,mid+1,e,a,b))%MOD;
}

void filvec()
{
    vec.clear();
    int cnt=0;
    for(auto x:st){
        vec.push_back(-x);
        cnt++;
        if(cnt==L)break;
    }
    if(vec.empty()||vec.back()!=0)vec.push_back(0);
    reverse(vec.begin(),vec.end());
}

long long getansst()
{
    filvec();
    long long ret=0;
    long long sum2=1,val=0;
    for(int h=0;h<vec.size();h++){
        int i=vec[h];
        int i2;
        if(h==vec.size()-1)i2=n;
        else i2=vec[h+1];
        sum2*=x[i];
        long long u=sum2*get(1,0,n-1,i,i2-1);
        if((sum2>val)||(u>val)){
            sum2=1;
            ret=get(1,0,n-1,i,i2-1)*get2(1,0,n-1,0,i);
            val=get(1,0,n-1,i,i2-1);
        }
    }
    ret%=MOD;
    return ret;
}

int init(int N, int X[], int Y[]){
    st.clear();
    n=N;
    for(int i=0;i<N;i++){
        x[i]=X[i];
        y[i]=Y[i];
        if(x[i]!=1){
            st.insert(-i);
        }
    }
    build(1,0,n-1);

    long long u=getansst();
    return u;
}

int updateX(int pos, int val) {

    if(x[pos]!=1)st.erase(-pos);
    x[pos]=val;
    if(x[pos]!=1)st.insert(-pos);

    update2(1,0,n-1,pos,val);

    long long u=getansst();
    return u;
}

int updateY(int pos, int val) {

    y[pos] = val;
    update(1,0,n-1,pos,val);

    long long u=getansst();
    return u;
}

Compilation message

horses.cpp: In function 'void filvec()':
horses.cpp:89:14: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   89 |     for(auto x:st){
      |              ^
horses.cpp:10:11: note: shadowed declaration is here
   10 | long long x[N];
      |           ^
horses.cpp: In function 'long long int getansst()':
horses.cpp:103:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |     for(int h=0;h<vec.size();h++){
      |                 ~^~~~~~~~~~~
horses.cpp:106:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |         if(h==vec.size()-1)i2=n;
      |            ~^~~~~~~~~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:120:14: warning: declaration of 'N' shadows a global declaration [-Wshadow]
  120 | int init(int N, int X[], int Y[]){
      |          ~~~~^
horses.cpp:7:11: note: shadowed declaration is here
    7 | const int N=1e6+100;
      |           ^
horses.cpp:133:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  133 |     return u;
      |            ^
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:145:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  145 |     return u;
      |            ^
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:154:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  154 |     return u;
      |            ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 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 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 320 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 316 KB Output is correct
23 Correct 7 ms 332 KB Output is correct
24 Correct 7 ms 436 KB Output is correct
25 Correct 6 ms 460 KB Output is correct
26 Correct 8 ms 468 KB Output is correct
27 Correct 5 ms 328 KB Output is correct
28 Correct 11 ms 340 KB Output is correct
29 Correct 2 ms 328 KB Output is correct
30 Correct 8 ms 460 KB Output is correct
31 Correct 3 ms 332 KB Output is correct
32 Correct 4 ms 384 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 855 ms 53548 KB Output is correct
2 Execution timed out 1509 ms 53096 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 320 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 7 ms 340 KB Output is correct
24 Correct 6 ms 340 KB Output is correct
25 Correct 9 ms 488 KB Output is correct
26 Correct 8 ms 472 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 10 ms 468 KB Output is correct
29 Correct 2 ms 404 KB Output is correct
30 Correct 8 ms 340 KB Output is correct
31 Correct 5 ms 340 KB Output is correct
32 Correct 6 ms 328 KB Output is correct
33 Correct 201 ms 32736 KB Output is correct
34 Correct 151 ms 32612 KB Output is correct
35 Correct 348 ms 62908 KB Output is correct
36 Correct 271 ms 62796 KB Output is correct
37 Correct 155 ms 30804 KB Output is correct
38 Correct 222 ms 43668 KB Output is correct
39 Correct 43 ms 30544 KB Output is correct
40 Correct 290 ms 57976 KB Output is correct
41 Correct 81 ms 30596 KB Output is correct
42 Correct 93 ms 30656 KB Output is correct
43 Correct 161 ms 58380 KB Output is correct
44 Correct 204 ms 58276 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 320 KB Output is correct
4 Correct 1 ms 388 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 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 0 ms 212 KB Output is correct
23 Correct 8 ms 332 KB Output is correct
24 Correct 10 ms 340 KB Output is correct
25 Correct 7 ms 472 KB Output is correct
26 Correct 8 ms 460 KB Output is correct
27 Correct 5 ms 340 KB Output is correct
28 Correct 8 ms 464 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 7 ms 460 KB Output is correct
31 Correct 3 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct
33 Correct 882 ms 56780 KB Output is correct
34 Execution timed out 1521 ms 65488 KB Time limit exceeded
35 Halted 0 ms 0 KB -