oj.uz

Submission #401389

# Submission time Handle Problem Language Result Execution time Memory
401389 2021-05-10T06:01:47 Z ja_kingy Fish (IOI08_fish) C++14
95 / 100
 685 ms 43584 KB 
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> pii;
const int mxF = 5e5;
int f,k,m,cnt[mxF],ord[mxF],st[1<<20],ans;
vector<int> of_type[mxF];

void upd(int x, int v) {
    st[x += k] = v%m;
    for (; x/=2; ) st[x] = st[x*2]*st[x*2+1]%m; 
}

int qry(int l, int r) {
    int res = 1;
    for (l += k, r += k; l < r; l/=2, r/=2) {
        if (l&1) res=res*st[l++]%m;
        if (r&1) res=res*st[--r]%m;
    }
    return res;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    fill(st, end(st), 1);
    cin >> f >> k >> m;
    vector<pii> fish(f);
    for (int i = 0,l,x; i < f; ++i) {
        cin >> l >> x;
        x--;
        of_type[x].push_back(l);
        fish[i] = {l, x};
    }
    sort(fish.begin(), fish.end());
    for (int x = 0; x < k; ++x) sort(of_type[x].begin(), of_type[x].end());
    vector<pii> types(k);
    for (int i = 0; i < k; ++i) {
        types[i] = {of_type[i].back(), i};
    }    
    sort(types.begin(), types.end());
    for (int i = 0; i < k; ++i) ord[types[i].second] = i;
    int smallest = 0;
    for (auto [l,x]: types) {
        while (fish[smallest].first <= l/2) {
            cnt[fish[smallest].second]++;
            upd(ord[fish[smallest].second], cnt[fish[smallest].second]+1);
            smallest++;
        }
        int ltm = qry(0, ord[x]);
        ans = (ans+(ltm*cnt[x]%m))%m;
        int sm_of_type = *upper_bound(of_type[x].begin(), of_type[x].end(), l/2);
        ans = (ans+(ltm*qry(ord[x]+1, lower_bound(types.begin(), types.end(), make_pair(2*sm_of_type,0))-types.begin())))%m;
    }
    cout << ans;
}

Compilation message

fish.cpp: In function 'int main()':
fish.cpp:44:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   44 |     for (auto [l,x]: types) {
      |               ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16076 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16168 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16168 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16172 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16272 KB Output is correct
2 Correct 13 ms 16172 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16124 KB Output is correct
2 Correct 205 ms 22616 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16204 KB Output is correct

Subtask #8
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16332 KB Output is correct

Subtask #9
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 19232 KB Output is correct
2 Correct 112 ms 19836 KB Output is correct

Subtask #10
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16312 KB Output is correct
2 Correct 13 ms 16332 KB Output is correct
3 Correct 13 ms 16204 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 20804 KB Output is correct
2 Correct 261 ms 22572 KB Output is correct
3 Correct 228 ms 22976 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 205 ms 23500 KB Output is correct
2 Correct 220 ms 23264 KB Output is correct

Subtask #13
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 129 ms 20804 KB Output is correct
2 Correct 240 ms 23052 KB Output is correct

Subtask #14
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 216 ms 22872 KB Output is correct

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 246 ms 23976 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 231 ms 22952 KB Output is correct
2 Correct 292 ms 26168 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 453 ms 27388 KB Output is correct
2 Correct 284 ms 25796 KB Output is correct

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 340 ms 28460 KB Output is correct
2 Correct 355 ms 26580 KB Output is correct
3 Incorrect 443 ms 30816 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #19
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 539 ms 29892 KB Output is correct
2 Correct 582 ms 43584 KB Output is correct
3 Correct 685 ms 41720 KB Output is correct
4 Correct 669 ms 39004 KB Output is correct