oj.uz

답안 #653659

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
653659 2022-10-27T15:05:43 Z esomer 말 (IOI15_horses) C++17
100 / 100
 846 ms 53324 KB 
#include<bits/stdc++.h>
//#include "horses.h"

using namespace std;

#define ll long long
#define endl "\n"

const int MOD = 1e9 + 7;
const int maxN = 500000;
const int siz = 1048576 / 2;
int N;
int x[maxN];
int y[maxN];
int segTree[siz * 2];
int segTree2[siz * 2];
set<int, greater<int>> s;

void st(int i, int v, int p, int lx, int rx){
    if(rx - lx == 1){
        segTree[p] = v;
        return;
    }
    int m = (lx + rx) / 2;
    if(i < m) st(i, v, 2 * p + 1, lx, m);
    else st(i, v, 2 * p + 2, m, rx);
    segTree[p] = max(segTree[2 * p + 1], segTree[2 * p + 2]);
}

int mx(int l, int r, int p, int lx, int rx){
    if(lx >= l && rx <= r) return segTree[p];
    else if(lx >= r || rx <= l) return 0;
    int m = (lx + rx) / 2;
    int m1 = mx(l, r, 2 * p + 1, lx, m);
    int m2 = mx(l, r, 2 * p + 2, m, rx);
    return max(m1, m2);
}

void st_x(int i, int v, int p, int lx, int rx){
    if(rx - lx == 1){
        segTree2[p] = v;
        return;
    }
    int m = (lx + rx) / 2;
    if(i < m) st_x(i, v, 2 * p + 1, lx, m);
    else st_x(i, v, 2 * p + 2, m, rx);
    ll left = segTree2[2 * p + 1];
    ll right = segTree2[2 * p + 2];
    segTree2[p] = (left * right) % MOD;
}

ll mult(int l, int r, int p, int lx, int rx){
    if(lx >= l && rx <= r) return segTree2[p];
    else if(lx >= r || rx <= l) return 1;
    int m = (lx + rx) / 2;
    ll m1 = mult(l, r, 2 * p + 1, lx, m);
    ll m2 = mult(l, r, 2 * p + 2, m, rx);
    return (m1 * m2) % MOD;
}

int ans(){
    vector<int> ind;
    ll best = 0;
    ll optimaly = -1;
    int r = 0;
    if(s.empty() == false){
        auto it = s.begin();
        ll curr = 1;
        bool included = 0;
        int limit = 1000000000;
        while(curr <= limit){
            curr *= x[*it];
            ind.push_back(*it);
            if(curr > limit) continue;
            if(*it == 0) included = 1;
            it++;
            if(it == s.end()){
                if(ind.back() != 0) ind.push_back(0);
                break;
            }
        }
        reverse(ind.begin(), ind.end());
        curr = 1;
        if(included) curr = x[0];
        ind.push_back(N);
        for(int i = 1; i < (int)ind.size(); i++){
            ll bestY = mx(ind[i - 1], ind[i], 0, 0, siz);
            if(best < curr * bestY){
                optimaly = bestY;
                best = curr * bestY;
                r = i;
            }
            if(ind[i] != N) curr *= x[ind[i]];
        }
    }else{
        ind.push_back(N);
        r = 0;
        optimaly = mx(0, N, 0, 0, siz);
    }
	return (optimaly * mult(0, ind[r], 0, 0, siz)) % MOD;
}

int init(int n, int X[], int Y[] /*vector<int> X, vector<int> Y*/) {
    N = n;
    for(int i = 0; i < siz; i++){
        segTree[i] = 0; segTree2[i] = 1;
    }
    for(int i = 0; i < N; i++){
        x[i] = X[i]; y[i] = Y[i];
        st(i, y[i], 0, 0, siz);
        st_x(i, x[i], 0, 0, siz);
        if(x[i] != 1) s.insert(i);
    }
    return ans();
}

int updateX(int pos, int val) {
    st_x(pos, val, 0, 0, siz);
    if(x[pos] != 1 && val == 1) s.erase(pos);
    else if(x[pos] == 1 && val != 1) s.insert(pos);
    x[pos] = val;
	return ans();
}

int updateY(int pos, int val) {
    st(pos, val, 0, 0, siz);
	return ans();
}
/*
int main() {
    int n; cin >> n;
    vector<int> v(n);
    vector<int> v2(n);
    for(auto &i : v) cin >> i;
    for(auto &i : v2) cin >> i;
    cout << init(n, v, v2) << endl;
    int m; cin >> m;
    while(m--){
        int t, pos, val; cin >> t >> pos >> val;
        if(t) cout << updateX(pos, val) << endl;
        else cout << updateY(pos, val)<< endl;
    }
}*/

Compilation message

horses.cpp: In function 'void st_x(int, int, int, int, int)':
horses.cpp:49:34: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   49 |     segTree2[p] = (left * right) % MOD;
      |                   ~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int ans()':
horses.cpp:100:49: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  100 |  return (optimaly * mult(0, ind[r], 0, 0, siz)) % MOD;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4436 KB Output is correct
2 Correct 2 ms 4436 KB Output is correct
3 Correct 3 ms 4436 KB Output is correct
4 Correct 2 ms 4436 KB Output is correct
5 Correct 3 ms 4412 KB Output is correct
6 Correct 2 ms 4436 KB Output is correct
7 Correct 3 ms 4436 KB Output is correct
8 Correct 3 ms 4436 KB Output is correct
9 Correct 2 ms 4396 KB Output is correct
10 Correct 2 ms 4436 KB Output is correct
11 Correct 3 ms 4436 KB Output is correct
12 Correct 4 ms 4436 KB Output is correct
13 Correct 3 ms 4436 KB Output is correct
14 Correct 3 ms 4436 KB Output is correct
15 Correct 3 ms 4412 KB Output is correct
16 Correct 3 ms 4436 KB Output is correct
17 Correct 2 ms 4436 KB Output is correct
18 Correct 3 ms 4436 KB Output is correct
19 Correct 2 ms 4436 KB Output is correct
20 Correct 2 ms 4436 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4436 KB Output is correct
2 Correct 2 ms 4316 KB Output is correct
3 Correct 2 ms 4436 KB Output is correct
4 Correct 2 ms 4436 KB Output is correct
5 Correct 3 ms 4436 KB Output is correct
6 Correct 3 ms 4408 KB Output is correct
7 Correct 4 ms 4436 KB Output is correct
8 Correct 4 ms 4436 KB Output is correct
9 Correct 3 ms 4436 KB Output is correct
10 Correct 3 ms 4436 KB Output is correct
11 Correct 2 ms 4436 KB Output is correct
12 Correct 2 ms 4436 KB Output is correct
13 Correct 3 ms 4436 KB Output is correct
14 Correct 2 ms 4436 KB Output is correct
15 Correct 3 ms 4408 KB Output is correct
16 Correct 3 ms 4436 KB Output is correct
17 Correct 3 ms 4436 KB Output is correct
18 Correct 2 ms 4436 KB Output is correct
19 Correct 2 ms 4436 KB Output is correct
20 Correct 4 ms 4436 KB Output is correct
21 Correct 3 ms 4404 KB Output is correct
22 Correct 3 ms 4472 KB Output is correct
23 Correct 4 ms 4396 KB Output is correct
24 Correct 4 ms 4436 KB Output is correct
25 Correct 5 ms 4544 KB Output is correct
26 Correct 3 ms 4520 KB Output is correct
27 Correct 8 ms 4416 KB Output is correct
28 Correct 5 ms 4424 KB Output is correct
29 Correct 4 ms 4416 KB Output is correct
30 Correct 4 ms 4424 KB Output is correct
31 Correct 7 ms 4436 KB Output is correct
32 Correct 8 ms 4436 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 754 ms 40740 KB Output is correct
2 Correct 421 ms 53324 KB Output is correct
3 Correct 403 ms 44420 KB Output is correct
4 Correct 446 ms 48168 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4436 KB Output is correct
2 Correct 2 ms 4328 KB Output is correct
3 Correct 3 ms 4436 KB Output is correct
4 Correct 2 ms 4436 KB Output is correct
5 Correct 2 ms 4436 KB Output is correct
6 Correct 3 ms 4436 KB Output is correct
7 Correct 3 ms 4436 KB Output is correct
8 Correct 3 ms 4436 KB Output is correct
9 Correct 3 ms 4436 KB Output is correct
10 Correct 2 ms 4436 KB Output is correct
11 Correct 3 ms 4404 KB Output is correct
12 Correct 2 ms 4412 KB Output is correct
13 Correct 2 ms 4436 KB Output is correct
14 Correct 2 ms 4436 KB Output is correct
15 Correct 3 ms 4404 KB Output is correct
16 Correct 2 ms 4412 KB Output is correct
17 Correct 3 ms 4456 KB Output is correct
18 Correct 2 ms 4436 KB Output is correct
19 Correct 2 ms 4436 KB Output is correct
20 Correct 2 ms 4436 KB Output is correct
21 Correct 2 ms 4404 KB Output is correct
22 Correct 2 ms 4436 KB Output is correct
23 Correct 4 ms 4436 KB Output is correct
24 Correct 4 ms 4436 KB Output is correct
25 Correct 5 ms 4436 KB Output is correct
26 Correct 4 ms 4436 KB Output is correct
27 Correct 10 ms 4436 KB Output is correct
28 Correct 5 ms 4436 KB Output is correct
29 Correct 4 ms 4436 KB Output is correct
30 Correct 4 ms 4420 KB Output is correct
31 Correct 6 ms 4436 KB Output is correct
32 Correct 7 ms 4492 KB Output is correct
33 Correct 189 ms 20364 KB Output is correct
34 Correct 202 ms 20288 KB Output is correct
35 Correct 351 ms 50668 KB Output is correct
36 Correct 354 ms 50504 KB Output is correct
37 Correct 236 ms 18444 KB Output is correct
38 Correct 256 ms 31248 KB Output is correct
39 Correct 180 ms 18180 KB Output is correct
40 Correct 335 ms 45676 KB Output is correct
41 Correct 225 ms 18196 KB Output is correct
42 Correct 217 ms 18348 KB Output is correct
43 Correct 322 ms 46008 KB Output is correct
44 Correct 328 ms 46004 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4436 KB Output is correct
2 Correct 2 ms 4436 KB Output is correct
3 Correct 2 ms 4436 KB Output is correct
4 Correct 2 ms 4412 KB Output is correct
5 Correct 2 ms 4404 KB Output is correct
6 Correct 4 ms 4404 KB Output is correct
7 Correct 2 ms 4436 KB Output is correct
8 Correct 3 ms 4404 KB Output is correct
9 Correct 2 ms 4436 KB Output is correct
10 Correct 3 ms 4436 KB Output is correct
11 Correct 3 ms 4408 KB Output is correct
12 Correct 3 ms 4436 KB Output is correct
13 Correct 2 ms 4436 KB Output is correct
14 Correct 2 ms 4436 KB Output is correct
15 Correct 3 ms 4436 KB Output is correct
16 Correct 3 ms 4436 KB Output is correct
17 Correct 4 ms 4436 KB Output is correct
18 Correct 2 ms 4408 KB Output is correct
19 Correct 2 ms 4436 KB Output is correct
20 Correct 3 ms 4436 KB Output is correct
21 Correct 3 ms 4436 KB Output is correct
22 Correct 2 ms 4436 KB Output is correct
23 Correct 4 ms 4420 KB Output is correct
24 Correct 4 ms 4436 KB Output is correct
25 Correct 5 ms 4440 KB Output is correct
26 Correct 4 ms 4436 KB Output is correct
27 Correct 9 ms 4424 KB Output is correct
28 Correct 5 ms 4540 KB Output is correct
29 Correct 4 ms 4436 KB Output is correct
30 Correct 4 ms 4416 KB Output is correct
31 Correct 6 ms 4436 KB Output is correct
32 Correct 8 ms 4484 KB Output is correct
33 Correct 846 ms 44452 KB Output is correct
34 Correct 448 ms 53156 KB Output is correct
35 Correct 457 ms 44368 KB Output is correct
36 Correct 479 ms 48240 KB Output is correct
37 Correct 196 ms 20300 KB Output is correct
38 Correct 189 ms 20220 KB Output is correct
39 Correct 345 ms 50548 KB Output is correct
40 Correct 338 ms 50552 KB Output is correct
41 Correct 240 ms 18356 KB Output is correct
42 Correct 245 ms 31136 KB Output is correct
43 Correct 196 ms 18120 KB Output is correct
44 Correct 335 ms 45600 KB Output is correct
45 Correct 210 ms 18196 KB Output is correct
46 Correct 212 ms 18304 KB Output is correct
47 Correct 323 ms 45996 KB Output is correct
48 Correct 326 ms 45928 KB Output is correct
49 Correct 317 ms 23304 KB Output is correct
50 Correct 280 ms 23364 KB Output is correct
51 Correct 497 ms 52400 KB Output is correct
52 Correct 407 ms 51904 KB Output is correct
53 Correct 783 ms 21708 KB Output is correct
54 Correct 430 ms 35184 KB Output is correct
55 Correct 274 ms 19368 KB Output is correct
56 Correct 423 ms 47628 KB Output is correct
57 Correct 512 ms 19920 KB Output is correct
58 Correct 630 ms 20460 KB Output is correct
59 Correct 321 ms 46020 KB Output is correct