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답안 #649936

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
649936 2022-10-11T15:53:15 Z PoonYaPat 말 (IOI15_horses) C++14
100 / 100
 867 ms 50148 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;

int n;
const ll mod=1e9+7;
pll ms[1<<21]; //-1,mod
ll x[500001],y[500001];

void build_ms(int l, int r, int idx) {
    if (l>r) return;
    if (l==r) ms[idx]={x[l],x[l]};
    else {
        int mid=(l+r)/2;
        build_ms(l,mid,2*idx);
        build_ms(mid+1,r,2*idx+1);

        if (ms[2*idx].first==-1 || ms[2*idx+1].first==-1) ms[idx].first=-1;
        else {
            if (ms[2*idx].first*ms[2*idx+1].first>1e9) ms[idx].first=-1;
            else ms[idx].first=ms[2*idx].first*ms[2*idx+1].first;
        }
        ms[idx].second=(ms[2*idx].second*ms[2*idx+1].second)%mod;
    }
}

void update_ms(int l, int r, int idx, int k, ll val) {
    if (l>k || k>r) return;
    if (l==r) ms[idx]={val,val};
    else {
        int mid=(l+r)/2;
        update_ms(l,mid,2*idx,k,val);
        update_ms(mid+1,r,2*idx+1,k,val);

        if (ms[2*idx].first==-1 || ms[2*idx+1].first==-1) ms[idx].first=-1;
        else {
            if (ms[2*idx].first*ms[2*idx+1].first>1e9) ms[idx].first=-1;
            else ms[idx].first=ms[2*idx].first*ms[2*idx+1].first;
        }
        ms[idx].second=(ms[2*idx].second*ms[2*idx+1].second)%mod;
    }
}

ll query_ms(int l, int r, int idx, int x, int y) {
    if (l>y || r<x) return 1;
    if (x<=l && r<=y) return ms[idx].first;

    int mid=(l+r)/2;
    ll ml=query_ms(l,mid,2*idx,x,y), mr=query_ms(mid+1,r,2*idx+1,x,y);

    if (ml==-1 || mr==-1) return -1;
    else {
        if (ml*mr>1e9) return -1;
        else return ml*mr;
    }
}

ll query_ms2(int l, int r, int idx, int x, int y) {
    if (l>y || r<x) return 1;
    if (x<=l && r<=y) return ms[idx].second;

    int mid=(l+r)/2;
    return (query_ms2(l,mid,2*idx,x,y)*query_ms2(mid+1,r,2*idx+1,x,y))%mod;
}

ll h;
int check(int a, int b) { //whether who is bigger between s[a] and a[b]
    h=query_ms(0,n-1,1,a+1,b);
    if (h==-1) return b;
    if (y[a]>y[b]*h) return a;
    else return b;
}

ll s[1<<21];

void update(int l, int r, int idx) {
    if (l>r) return;
    if (l==r) s[idx]=l;
    else {
        int mid=(l+r)/2;
        update(l,mid,2*idx);
        update(mid+1,r,2*idx+1);
        s[idx]=check(s[2*idx],s[2*idx+1]);
    }
}

void update2(int l, int r, int idx, int x, int y) {
    if (l>y || r<x) return;
    if (x<=l && r<=y) return;
    else {
        int mid=(l+r)/2;
        update2(l,mid,2*idx,x,y);
        update2(mid+1,r,2*idx+1,x,y);
        s[idx]=check(s[2*idx],s[2*idx+1]);
    }
}

void update3(int l, int r, int idx, int x) {
    if (l>x || x>r) return;
    if (l==r) return;
    else {
        int mid=(l+r)/2;
        update3(l,mid,2*idx,x);
        update3(mid+1,r,2*idx+1,x);
        s[idx]=check(s[2*idx],s[2*idx+1]);
    }
}

int init(int N, int X[], int Y[]) {
    n=N;
    for (int i=0; i<n; ++i) x[i]=X[i], y[i]=Y[i];
    build_ms(0,n-1,1);

    update(0,n-1,1);
    return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;

}

int updateX(int pos, int val) {
    x[pos]=val;
    update_ms(0,n-1,1,pos,val);
    update2(0,n-1,1,pos,n-1);

    return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
}

int updateY(int pos, int val) {
    y[pos]=val;
    update3(0,n-1,1,pos);

    return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
}

Compilation message

horses.cpp: In function 'void build_ms(int, int, int)':
horses.cpp:22:32: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   22 |             if (ms[2*idx].first*ms[2*idx+1].first>1e9) ms[idx].first=-1;
      |                 ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
horses.cpp: In function 'void update_ms(int, int, int, int, ll)':
horses.cpp:39:32: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   39 |             if (ms[2*idx].first*ms[2*idx+1].first>1e9) ms[idx].first=-1;
      |                 ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
horses.cpp: In function 'll query_ms(int, int, int, int, int)':
horses.cpp:46:47: warning: declaration of 'y' shadows a global declaration [-Wshadow]
   46 | ll query_ms(int l, int r, int idx, int x, int y) {
      |                                           ~~~~^
horses.cpp:10:14: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |              ^
horses.cpp:46:40: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   46 | ll query_ms(int l, int r, int idx, int x, int y) {
      |                                    ~~~~^
horses.cpp:10:4: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |    ^
horses.cpp:55:15: warning: conversion from 'll' {aka 'long long int'} to 'double' may change value [-Wconversion]
   55 |         if (ml*mr>1e9) return -1;
      |             ~~^~~
horses.cpp: In function 'll query_ms2(int, int, int, int, int)':
horses.cpp:60:48: warning: declaration of 'y' shadows a global declaration [-Wshadow]
   60 | ll query_ms2(int l, int r, int idx, int x, int y) {
      |                                            ~~~~^
horses.cpp:10:14: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |              ^
horses.cpp:60:41: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   60 | ll query_ms2(int l, int r, int idx, int x, int y) {
      |                                     ~~~~^
horses.cpp:10:4: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |    ^
horses.cpp: In function 'void update(int, int, int)':
horses.cpp:85:29: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   85 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                      ~~~~~~~^
horses.cpp:85:40: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   85 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                               ~~~~~~~~~^
horses.cpp: In function 'void update2(int, int, int, int, int)':
horses.cpp:89:48: warning: declaration of 'y' shadows a global declaration [-Wshadow]
   89 | void update2(int l, int r, int idx, int x, int y) {
      |                                            ~~~~^
horses.cpp:10:14: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |              ^
horses.cpp:89:41: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   89 | void update2(int l, int r, int idx, int x, int y) {
      |                                     ~~~~^
horses.cpp:10:4: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |    ^
horses.cpp:96:29: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   96 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                      ~~~~~~~^
horses.cpp:96:40: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   96 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                               ~~~~~~~~~^
horses.cpp: In function 'void update3(int, int, int, int)':
horses.cpp:100:41: warning: declaration of 'x' shadows a global declaration [-Wshadow]
  100 | void update3(int l, int r, int idx, int x) {
      |                                     ~~~~^
horses.cpp:10:4: note: shadowed declaration is here
   10 | ll x[500001],y[500001];
      |    ^
horses.cpp:107:29: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  107 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                      ~~~~~~~^
horses.cpp:107:40: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  107 |         s[idx]=check(s[2*idx],s[2*idx+1]);
      |                               ~~~~~~~~~^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:117:36: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  117 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |                                 ~~~^
horses.cpp:117:47: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  117 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:126:36: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  126 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |                                 ~~~^
horses.cpp:126:47: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  126 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:133:36: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  133 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |                                 ~~~^
horses.cpp:133:47: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  133 |     return (query_ms2(0,n-1,1,0,s[1])*y[s[1]])%mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 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 0 ms 212 KB Output is correct
8 Correct 0 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 212 KB Output is correct
12 Correct 0 ms 340 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 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 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 1 ms 212 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 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 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 340 KB Output is correct
17 Correct 0 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 1 ms 212 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 320 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 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 312 KB Output is correct
30 Correct 2 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

# 결과 실행 시간 메모리 Grader output
1 Correct 490 ms 37648 KB Output is correct
2 Correct 458 ms 40980 KB Output is correct
3 Correct 587 ms 41548 KB Output is correct
4 Correct 537 ms 41968 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 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 1 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 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 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 3 ms 324 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 324 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 2 ms 328 KB Output is correct
33 Correct 227 ms 40696 KB Output is correct
34 Correct 215 ms 40748 KB Output is correct
35 Correct 202 ms 47620 KB Output is correct
36 Correct 176 ms 47468 KB Output is correct
37 Correct 180 ms 38832 KB Output is correct
38 Correct 171 ms 39764 KB Output is correct
39 Correct 166 ms 38776 KB Output is correct
40 Correct 159 ms 42848 KB Output is correct
41 Correct 169 ms 38884 KB Output is correct
42 Correct 164 ms 38808 KB Output is correct
43 Correct 155 ms 42976 KB Output is correct
44 Correct 141 ms 43032 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 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 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 3 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 3 ms 320 KB Output is correct
29 Correct 2 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 2 ms 340 KB Output is correct
33 Correct 489 ms 41428 KB Output is correct
34 Correct 456 ms 50148 KB Output is correct
35 Correct 605 ms 41380 KB Output is correct
36 Correct 554 ms 45280 KB Output is correct
37 Correct 244 ms 40800 KB Output is correct
38 Correct 228 ms 40596 KB Output is correct
39 Correct 197 ms 47524 KB Output is correct
40 Correct 187 ms 47648 KB Output is correct
41 Correct 203 ms 38796 KB Output is correct
42 Correct 168 ms 39708 KB Output is correct
43 Correct 152 ms 38720 KB Output is correct
44 Correct 161 ms 42632 KB Output is correct
45 Correct 170 ms 38732 KB Output is correct
46 Correct 161 ms 38812 KB Output is correct
47 Correct 144 ms 43008 KB Output is correct
48 Correct 160 ms 43100 KB Output is correct
49 Correct 867 ms 42672 KB Output is correct
50 Correct 811 ms 42812 KB Output is correct
51 Correct 531 ms 49420 KB Output is correct
52 Correct 355 ms 48956 KB Output is correct
53 Correct 651 ms 41036 KB Output is correct
54 Correct 487 ms 41712 KB Output is correct
55 Correct 349 ms 39724 KB Output is correct
56 Correct 355 ms 44528 KB Output is correct
57 Correct 567 ms 40504 KB Output is correct
58 Correct 502 ms 40860 KB Output is correct
59 Correct 140 ms 42948 KB Output is correct