oj.uz

Submission #433088

# Submission time Handle Problem Language Result Execution time Memory
433088 2021-06-18T20:34:06 Z ly20 Hiring (IOI09_hiring) C++17
100 / 100
 1094 ms 24900 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 512345;
long long s[MAXN], q[MAXN];
int id[MAXN];
bool cmp(int a, int b) {
    return s[a] * q[b] < s[b] * q[a];
}
int main() {
    int n;
    long long w;
    scanf("%d %lld", &n, &w);
    for(int i = 0; i < n; i++) {
            id[i] = i;
        scanf("%lld %lld", &s[i], &q[i]);
    }
    sort(id, id + n, cmp);
    set <pair <long long, int> > s1;
    int resp = -1, id1 = 0;
    long long sum = 0;
    long long ccur = 0, cst = 0, qt = 1;
    for(int i = 0; i < n; i++) {
        //printf("oi\n");
        int cur = id[i];
        sum += q[cur];
        long long mn = s[cur];
        s1.insert(make_pair(q[cur],cur));
        while(sum * mn > w * q[cur]) {
            sum -= (*(--s1.end())).first;
            s1.erase(--s1.end());
        }
        ccur = sum * mn;
        //printf("%d %d\n", s1.size(), resp);
        if((int) s1.size() > resp || ((int) s1.size() == resp && cst * q[cur] > ccur * qt)) {
                //printf("oi\n");
            resp = s1.size();
            qt = q[cur];
            cst = ccur;
            id1 = i;
        }
    }
    //printf("%d\n", resp);
    s1.clear();
    sum = 0;
    for(int i = 0; i <= id1; i++) {
        int cur = id[i];
        sum += q[cur];
        long long mn = s[cur];
        s1.insert(make_pair(q[cur],cur));
        while(sum * mn > w * q[cur]) {
            sum -= (*(--s1.end())).first;
            s1.erase(--s1.end());
        }
    }
    printf("%d\n", s1.size());
    vector <int> rsp;
    while(!s1.empty()) {
        rsp.push_back((*s1.begin()).second + 1);
        s1.erase(s1.begin());
    }
    sort(rsp.begin(), rsp.end());
    for(int i = 0; i < rsp.size(); i++) {
        printf("%d\n", rsp[i]);
    }
    return 0;
}

Compilation message

hiring.cpp: In function 'int main()':
hiring.cpp:55:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wformat=]
   55 |     printf("%d\n", s1.size());
      |             ~^     ~~~~~~~~~
      |              |            |
      |              int          std::set<std::pair<long long int, int> >::size_type {aka long unsigned int}
      |             %ld
hiring.cpp:62:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     for(int i = 0; i < rsp.size(); i++) {
      |                    ~~^~~~~~~~~~~~
hiring.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%d %lld", &n, &w);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
hiring.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%lld %lld", &s[i], &q[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 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 2 ms 392 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 4 ms 460 KB Output is correct
10 Correct 5 ms 460 KB Output is correct
11 Correct 6 ms 460 KB Output is correct
12 Correct 9 ms 852 KB Output is correct
13 Correct 8 ms 460 KB Output is correct
14 Correct 11 ms 844 KB Output is correct
15 Correct 13 ms 856 KB Output is correct

Subtask #2
28.0 / 28.0

# Verdict Execution time Memory 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 16 ms 1212 KB Output is correct
5 Correct 42 ms 2420 KB Output is correct
6 Correct 574 ms 13580 KB Output is correct
7 Correct 699 ms 19188 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct

Subtask #4
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct

Subtask #6
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 130 ms 5512 KB Output is correct
2 Correct 125 ms 5528 KB Output is correct
3 Correct 129 ms 5480 KB Output is correct

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 233 ms 9452 KB Output is correct
2 Correct 214 ms 9360 KB Output is correct
3 Correct 220 ms 9348 KB Output is correct

Subtask #8
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 827 ms 20888 KB Output is correct
2 Correct 818 ms 20932 KB Output is correct
3 Correct 786 ms 21084 KB Output is correct

Subtask #9
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1055 ms 24820 KB Output is correct
2 Correct 1094 ms 24900 KB Output is correct
3 Correct 1065 ms 24768 KB Output is correct