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답안 #268462

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
268462 2020-08-16T12:04:21 Z evpipis 이상한 기계 (APIO19_strange_device) C++11
0 / 100
 694 ms 40712 KB 
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
typedef long long ll;
typedef pair<ll, ll> pll;

const ll mx = 1e18;
vector<pll> vec, help;

ll gcd(ll a, ll b){
    if (a == 0)
        return b;
    return gcd(b%a, a);
}

ll find_fir(ll a, ll b){
    ll ans = a/gcd(a, b+1);
    if (a <= mx/b)
        ans = a*b;
    else
        ans = mx+1;
    return ans;
}

ll solve(ll m){
    for (int i = 0; i < vec.size(); i++){
        pll cur = vec[i];
        if (cur.se-cur.fi+1 >= m)
            return m;

        cur.fi %= m;
        cur.se %= m;

        if (cur.fi <= cur.se)
            help.pb(cur);
        else
            help.pb(mp(0, cur.se)), help.pb(mp(cur.fi, m-1));
    }

    ll ans = 0;
    /*for (int i = 0; i < m; i++){
        int fin = 0;
        for (int j = 0; j < help.size(); j++)
            if (help[j].fi <= i && i <= help[j].fi)
                fin = 1;

        ans += fin;
    }

    return ans;*/
    sort(help.begin(), help.end());
    for (int i = 0; i < help.size(); i++){
        pll cur = help[i];
        if (i+1 < help.size() && help[i+1].fi-1 < cur.se)
            ans += help[i+1].fi-cur.fi;
        else
            ans += cur.se-cur.fi+1;
    }

    return ans;
}

int main(){
    int n;
    ll a, b;
    scanf("%d %lld %lld", &n, &a, &b);

    ll m = find_fir(a, b);
    assert(m <= mx);

    for (int i = 0; i < n; i++){
        ll l, r;
        scanf("%lld %lld", &l, &r);
        vec.pb(mp(l, r));
    }

    //printf("%lld\n", m);
    printf("%lld\n", solve(m));
    return 0;
}

Compilation message

strange_device.cpp: In function 'll solve(ll)':
strange_device.cpp:30:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = 0; i < vec.size(); i++){
      |                     ~~^~~~~~~~~~~~
strange_device.cpp:56:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for (int i = 0; i < help.size(); i++){
      |                     ~~^~~~~~~~~~~~~
strange_device.cpp:58:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         if (i+1 < help.size() && help[i+1].fi-1 < cur.se)
      |             ~~~~^~~~~~~~~~~~~
strange_device.cpp: In function 'int main()':
strange_device.cpp:70:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   70 |     scanf("%d %lld %lld", &n, &a, &b);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:77:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   77 |         scanf("%lld %lld", &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 7 ms 892 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Runtime error 1 ms 512 KB Execution killed with signal 11

Subtask #3
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 571 ms 40656 KB Output is correct
3 Incorrect 550 ms 40712 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 571 ms 40656 KB Output is correct
3 Incorrect 550 ms 40712 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 571 ms 40656 KB Output is correct
3 Incorrect 550 ms 40712 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 58 ms 4976 KB Output is correct
3 Correct 60 ms 5016 KB Output is correct
4 Correct 694 ms 40636 KB Output is correct
5 Correct 64 ms 4996 KB Output is correct
6 Correct 56 ms 5096 KB Output is correct
7 Correct 55 ms 4968 KB Output is correct
8 Correct 62 ms 4968 KB Output is correct
9 Correct 57 ms 4964 KB Output is correct
10 Correct 56 ms 4964 KB Output is correct
11 Correct 58 ms 4964 KB Output is correct
12 Correct 51 ms 4964 KB Output is correct
13 Correct 56 ms 4964 KB Output is correct
14 Incorrect 587 ms 40636 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 7 ms 892 KB Output isn't correct
3 Halted 0 ms 0 KB -