oj.uz

Submission #1050709

# Submission time Handle Problem Language Result Execution time Memory
1050709 2024-08-09T12:59:37 Z ArthuroWich Horses (IOI15_horses) C++17
77 / 100
 563 ms 75860 KB 
#include "horses.h"
#include<bits/stdc++.h>
#define int long long int
using namespace std;
int x[500005], y[500005], segp[4*500005], segm[4*500005], mod = 1e9+7;
void buildp(int n, int l, int r) {
    if (l == r) {
        segp[n] = x[l];
    } else {
        int m = (l+r)/2;
        buildp(2*n, l, m);
        buildp(2*n+1, m+1, r);
        segp[n] = segp[2*n] * segp[2*n+1];
        segp[n] %= mod;
    }
}
void buildm(int n, int l, int r) {
    if (l == r) {
        segm[n] = y[l];
    } else {
        int m = (l+r)/2;
        buildm(2*n, l, m);
        buildm(2*n+1, m+1, r);
        segm[n] = max(segm[2*n], segm[2*n+1]);
    }
}
void updatep(int n, int l, int r, int i, int v) {
    if (l == r) {
        segp[n] = v;
    } else {
        int m = (l+r)/2;
        if (l <= i && i <= m) {
            updatep(2*n, l, m, i, v);
        } else {
            updatep(2*n+1, m+1, r, i, v);
        }
        segp[n] = segp[2*n] * segp[2*n+1];
        segp[n] %= mod;
    }
}
void updatem(int n, int l, int r, int i, int v) {
    if (l == r) {
        segm[n] = v;
    } else {
        int m = (l+r)/2;
        if (l <= i && i <= m) {
            updatem(2*n, l, m, i, v);
        } else {
            updatem(2*n+1, m+1, r, i, v);
        }
        segm[n] = max(segm[2*n], segm[2*n+1]);
    }
}
int queryp(int n, int l, int r, int a, int b) {
    if (b < l || r < a) {
        return 1;
    } else if (a <= l && r <= b) {
        return segp[n];
    } else {
        int m = (l+r)/2;
        return (queryp(2*n, l, m, a, b)*queryp(2*n+1, m+1, r, a, b))%mod;
    }
}
int querym(int n, int l, int r, int a, int b) {
    if (b < l || r < a) {
        return 0;
    } else if (a <= l && r <= b) {
        return segm[n];
    } else {
        int m = (l+r)/2;
        return max(querym(2*n, l, m, a, b), querym(2*n+1, m+1, r, a, b));
    }
}
int n;
set<pair<int, int>> segs;
int32_t calc() {
    int ind = 0, indl = 0, indr = 0, co = 0;
    auto j = segs.end();
    while(j != segs.begin()) {
        if (co > 63) {
            break;
        }
        co++;
        j--;
    }
    long double v = 0, a = 0, b = 0;
    bool f = 0;
    for (; j != segs.end(); j++) {
        auto [l, r] = *j;
        if (l == r) {
            a += log2(x[l]);
            if (a+log2(y[l]) > v) {
                f = 0;
                v = a+log2(y[l]);
                ind = l;
            }
        } else {
            int mx = querym(1, 0, n-1, l, r);
            if (a+log2(mx) > v) {
                v = a+log2(mx);
                indl = l;
                indr = r;
                f = 1;
            }
        }
    
    }
    if (f) {
        return (queryp(1, 0, n-1, 0, indl)*querym(1, 0, n-1, indl, indr)) % mod;
    }
    return (queryp(1, 0, n-1, 0, ind)*y[ind]) % mod;
}
int32_t init(int32_t N, int32_t X[], int32_t Y[]) {
    n = N;
    int l = -1, r = 0;
    for (int i = 0; i < n; i++) {
        x[i] = X[i];
        y[i] = Y[i];
        if (x[i] == 1) {
            if (l == -1) {
                l = i;
            } 
            r = i;
        } else {
            if (l != -1) {
                segs.insert({l, r});
            }
            l = -1;
            segs.insert({i, i});
        }
    }
    if (l != -1) {
        segs.insert({l, r});
    }
    buildp(1, 0, n-1);
    buildm(1, 0, n-1);
    return calc();
}
int32_t updateX(int32_t pos, int32_t val) {	
    if (x[pos] == 1 && val != 1) {
        auto i = segs.upper_bound({pos, pos});
        i--;
        auto [l, r] = *i;
        segs.erase({l, r});
        if (l != pos) {
            segs.insert({l, pos-1});
        }
        segs.insert({pos, pos});
        if (r != pos) {
            segs.insert({pos+1, r});
        }
    } else if (x[pos] != 1 && val == 1) {
        auto i = segs.lower_bound({pos, pos});
        set<pair<int, int>> todel;
        todel.insert({pos, pos});
        int ll = pos, rr = pos;
        if (pos != 0 && x[pos-1] == 1) {
            i--;
            auto [l, r] = *i;
            ll = l;
            todel.insert({l, r});
            i++;
        }
        if (pos != n-1 && x[pos+1] == 1) {
            i++;
            auto [l, r] = *i;
            rr = r;
            todel.insert({l, r});
        }
        for (auto c : todel) {
            segs.erase(c);
        }
        segs.insert({ll, rr});
    }
    x[pos] = val;
    updatep(1, 0, n-1, pos, val);
    return calc();
}
int32_t updateY(int32_t pos, int32_t val) {
    y[pos] = val;
    updatem(1, 0, n-1, pos, val);
    return calc();
}

Compilation message

horses.cpp: In function 'int32_t calc()':
horses.cpp:109:75: warning: conversion from 'long long int' to 'int32_t' {aka 'int'} may change value [-Wconversion]
  109 |         return (queryp(1, 0, n-1, 0, indl)*querym(1, 0, n-1, indl, indr)) % mod;
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp:111:47: warning: conversion from 'long long int' to 'int32_t' {aka 'int'} may change value [-Wconversion]
  111 |     return (queryp(1, 0, n-1, 0, ind)*y[ind]) % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp:86:31: warning: unused variable 'b' [-Wunused-variable]
   86 |     long double v = 0, a = 0, b = 0;
      |                               ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8628 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 8540 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8536 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8536 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 8540 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8536 KB Output is correct
23 Correct 4 ms 8680 KB Output is correct
24 Correct 3 ms 8540 KB Output is correct
25 Correct 3 ms 8540 KB Output is correct
26 Correct 3 ms 8540 KB Output is correct
27 Correct 3 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 2 ms 8540 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 1 ms 8540 KB Output is correct
32 Correct 2 ms 8540 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 277 ms 62244 KB Output is correct
2 Correct 356 ms 62292 KB Output is correct
3 Correct 290 ms 63312 KB Output is correct
4 Correct 340 ms 63068 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8624 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 8536 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 0 ms 8540 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8540 KB Output is correct
23 Correct 4 ms 8540 KB Output is correct
24 Correct 3 ms 8540 KB Output is correct
25 Correct 3 ms 8540 KB Output is correct
26 Correct 3 ms 8540 KB Output is correct
27 Correct 3 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8540 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 1 ms 8540 KB Output is correct
32 Correct 2 ms 8540 KB Output is correct
33 Correct 80 ms 35132 KB Output is correct
34 Correct 43 ms 35100 KB Output is correct
35 Correct 147 ms 73296 KB Output is correct
36 Correct 139 ms 73044 KB Output is correct
37 Correct 63 ms 33620 KB Output is correct
38 Correct 123 ms 65352 KB Output is correct
39 Correct 68 ms 33108 KB Output is correct
40 Correct 135 ms 68432 KB Output is correct
41 Correct 26 ms 33108 KB Output is correct
42 Correct 29 ms 33116 KB Output is correct
43 Correct 112 ms 68436 KB Output is correct
44 Correct 122 ms 68472 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 1 ms 8612 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 1 ms 8792 KB Output is correct
16 Correct 1 ms 8540 KB Output is correct
17 Correct 1 ms 8540 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 8540 KB Output is correct
20 Correct 1 ms 8540 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 8540 KB Output is correct
23 Correct 4 ms 8540 KB Output is correct
24 Correct 3 ms 8540 KB Output is correct
25 Correct 3 ms 8552 KB Output is correct
26 Correct 3 ms 8540 KB Output is correct
27 Correct 4 ms 8540 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8540 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 1 ms 8540 KB Output is correct
32 Correct 2 ms 8540 KB Output is correct
33 Correct 276 ms 66876 KB Output is correct
34 Correct 367 ms 75860 KB Output is correct
35 Correct 297 ms 66900 KB Output is correct
36 Correct 349 ms 70992 KB Output is correct
37 Correct 80 ms 35152 KB Output is correct
38 Correct 45 ms 35304 KB Output is correct
39 Correct 154 ms 73268 KB Output is correct
40 Correct 142 ms 73044 KB Output is correct
41 Correct 65 ms 33360 KB Output is correct
42 Correct 120 ms 65372 KB Output is correct
43 Correct 72 ms 32148 KB Output is correct
44 Correct 133 ms 68256 KB Output is correct
45 Correct 23 ms 32088 KB Output is correct
46 Correct 32 ms 33076 KB Output is correct
47 Correct 113 ms 67580 KB Output is correct
48 Correct 129 ms 68436 KB Output is correct
49 Correct 563 ms 38992 KB Output is correct
50 Correct 262 ms 39948 KB Output is correct
51 Correct 393 ms 75088 KB Output is correct
52 Incorrect 250 ms 74064 KB Output isn't correct
53 Halted 0 ms 0 KB -