oj.uz

답안 #395137

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
395137 2021-04-27T21:24:02 Z andremfq 말 (IOI15_horses) C++17
100 / 100
 923 ms 54264 KB 
//ideia Leonardo
#include <bits/stdc++.h>
#include "horses.h"
#define mp make_pair
#define mt make_tuple
#define ff first
#define ss second
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const int MAXN = 500001;
const int MOD = 1e9+7;
 
struct seg{
    ll id, v;
};
 
seg tree[4*MAXN];
ll mult[4*MAXN];
int *x, *y;
int n;
set<int> s; // todos os indices de x>=2
 
seg merge(seg a, seg b){
    if(a.v<b.v)
        return b;
    return a;
}
 
void build(int id, int l, int r){
    if(l==r){
        tree[id] = {l, y[l]};
        mult[id] = x[l];
        return;
    }
    int e = id*2+1;
    int d = id*2+2;
    int m = (l+r)>>1;
    build(e,l,m);
    build(d,m+1,r);
    tree[id] = merge(tree[e],tree[d]);
    mult[id] = (mult[e]*mult[d])%MOD;
}
 
void update(int id, int l, int r, int q){
    if(r< q || l > q){
        return;
    }
    if(l==q && r == q){
        tree[id] = {l,y[l]};
        return;
    }
    int e = id*2+1;
    int d = id*2+2;
    int m = (l+r)>>1;
    update(e,l,m,q);
    update(d,m+1,r,q);
    tree[id] = merge(tree[e],tree[d]);
}
 
seg query(int id, int l, int r, int ql, int qr){
    if(ql > r || qr < l || qr < ql)
        return {0,-1};
    if(ql <= l && r <= qr)
        return tree[id];
    int e = id*2+1;
    int d = id*2+2;
    int m = (l+r)>>1;
    return merge(query(e,l,m,ql,qr),query(d,m+1,r,ql,qr));
}
 
void updatemult(int id, int l, int r, int q){
    if(q < l || q > r)
        return;
    if(l==q && r ==q){
        mult[id] = x[l];
        return;
    }
    int e = id*2+1;
    int d = id*2+2;
    int m = (l+r)>>1;
    updatemult(e,l,m,q);
    updatemult(d,m+1,r,q);
    mult[id] = (mult[e]*mult[d])%MOD;
}
 
ll querymult(int id, int l, int r, int ql, int qr){
    if(ql > r || qr < l || qr < ql)
        return 1;
    if(ql <= l && r <= qr)
        return mult[id];
    int e = id*2+1;
    int d = id*2+2;
    int m = (l+r)>>1;
    return (querymult(e,l,m,ql,qr)*querymult(d,m+1,r,ql,qr))%MOD;
}
 
ll calc(){
    auto it = s.rbegin();
    //iterador reverso: começa na ultima posição e termina 1 a menos da primeira posição
 
    seg resp = {0,0};
    int r = n-1;
 
    while(true){
        if(it == s.rend()){ 
            resp = merge(resp, query(0,0,n-1,0,r));
            // compara a resposta atual com o bloco de 1 mais à esquerda
            break;
        }
        resp = merge(resp,query(0,0,n-1,*it,r));
        // compara a resposta atual com o próximo indice de x >= 2 e com o bloco de x = 1 à direita
        resp.v*= x[*it];
        r = *it-1;
        if(resp.v > (ll)1e9)
            break;
        it++;
    }
    return (querymult(0,0,n-1,0,resp.id) * y[resp.id]) % MOD;
}
 
int init(int N ,int X[], int Y[]){
    x = X; 
    y = Y;
    // o X[] e Y[] continuam sendo válidos mesmo depois da chamada da funcão então eu vou usar *x e *y pra acessar o array
    n = N;
    build(0,0,n-1);
    for(int i = 0; i < n; i++)
        if(x[i] >= 2)
            s.insert(i);
    return calc();
}  
 
int updateX(int pos, int val){
    s.erase(pos);
    x[pos] = val;
    if(x[pos]>=2)
        s.insert(pos);
    updatemult(0,0,n-1,pos);
    return calc();
}
 
int updateY(int pos, int val){
    y[pos] = val;
    update(0,0,n-1,pos);
    return calc();
}
 
/*int main(){
    int N, Q;
    cin >> N >> Q;
    int X[N], Y[N];
    for(int i = 0; i < N; i++)
        cin >> X[i];
    for(int i = 0; i < N; i++)
        cin >> Y[i];
    cout << init(N,X,Y) << '\n';
    for(int i = 0; i < Q; i++){
        int t, a, b;
        cin >> t >> a >> b;
        if(t){
            cout << updateY(a,b) << '\n';
        } else{
            cout << updateX(a,b) << '\n';
        }
    }
}*/

Compilation message

horses.cpp: In function 'll calc()':
horses.cpp:122:38: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  122 |     return (querymult(0,0,n-1,0,resp.id) * y[resp.id]) % MOD;
      |                                 ~~~~~^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:134:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  134 |     return calc();
      |            ~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:143:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  143 |     return calc();
      |            ~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:149:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  149 |     return calc();
      |            ~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 300 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 308 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 300 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 2 ms 316 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 1 ms 460 KB Output is correct
27 Correct 5 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 2 ms 332 KB Output is correct
31 Correct 3 ms 332 KB Output is correct
32 Correct 5 ms 332 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 755 ms 54164 KB Output is correct
2 Correct 363 ms 53836 KB Output is correct
3 Correct 382 ms 53732 KB Output is correct
4 Correct 393 ms 53740 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 5 ms 332 KB Output is correct
28 Correct 3 ms 332 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 2 ms 332 KB Output is correct
31 Correct 3 ms 332 KB Output is correct
32 Correct 6 ms 332 KB Output is correct
33 Correct 58 ms 29556 KB Output is correct
34 Correct 54 ms 29576 KB Output is correct
35 Correct 194 ms 52872 KB Output is correct
36 Correct 189 ms 52824 KB Output is correct
37 Correct 140 ms 29524 KB Output is correct
38 Correct 109 ms 41416 KB Output is correct
39 Correct 49 ms 29380 KB Output is correct
40 Correct 195 ms 52860 KB Output is correct
41 Correct 78 ms 29492 KB Output is correct
42 Correct 101 ms 29392 KB Output is correct
43 Correct 172 ms 52744 KB Output is correct
44 Correct 189 ms 52804 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 5 ms 332 KB Output is correct
28 Correct 3 ms 404 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 2 ms 332 KB Output is correct
31 Correct 3 ms 380 KB Output is correct
32 Correct 5 ms 332 KB Output is correct
33 Correct 749 ms 54264 KB Output is correct
34 Correct 374 ms 53828 KB Output is correct
35 Correct 388 ms 53756 KB Output is correct
36 Correct 404 ms 54004 KB Output is correct
37 Correct 84 ms 29508 KB Output is correct
38 Correct 52 ms 29548 KB Output is correct
39 Correct 209 ms 52916 KB Output is correct
40 Correct 191 ms 52904 KB Output is correct
41 Correct 139 ms 29544 KB Output is correct
42 Correct 111 ms 41332 KB Output is correct
43 Correct 48 ms 29368 KB Output is correct
44 Correct 191 ms 52916 KB Output is correct
45 Correct 76 ms 29360 KB Output is correct
46 Correct 101 ms 29420 KB Output is correct
47 Correct 203 ms 52804 KB Output is correct
48 Correct 167 ms 52992 KB Output is correct
49 Correct 203 ms 31460 KB Output is correct
50 Correct 160 ms 31428 KB Output is correct
51 Correct 411 ms 53844 KB Output is correct
52 Correct 277 ms 53828 KB Output is correct
53 Correct 923 ms 31360 KB Output is correct
54 Correct 342 ms 44300 KB Output is correct
55 Correct 202 ms 29508 KB Output is correct
56 Correct 323 ms 53832 KB Output is correct
57 Correct 489 ms 30280 KB Output is correct
58 Correct 727 ms 30276 KB Output is correct
59 Correct 190 ms 52848 KB Output is correct