Submission #141666

#	Time	Username	Problem	Language	Result	Execution time	Memory
141666		karma	Exhibition (JOI19_ho_t2)	C++11	100 / 100	67 ms	4600 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
#define FileName      "test"
#define ll            long long
#define ld            long double
#define ull           unsigned long long
#define Debug(x)      cerr << #x << "is " << x << '\n';
#define pb            emplace_back
#define mp            make_pair
#define x             first
#define y             second
//#define LuckyAurora
//#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")

using namespace std;

template<typename T> inline void Cin(T &x)
{
    char c;
    T sign = 1;
    x = 0;
    for (c = getchar(); c < '0' || c > '9'; c = getchar())
        if (c == '-') sign = -1;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
    x *= sign;
}
template <typename T> inline void Out(T x) {if(x > 9) Out(x / 10); putchar(x % 10 + '0');}
template <typename T> inline void Cout(T x, char c) {if(x < 0) putchar('-'); x = abs(x); Out(x); putchar(c);}
template <typename T, typename... Args> inline void Cin(T& a, Args&... args) {Cin(a);Cin(args...);}
template <typename T, typename... Args> inline void Cout(T a, char c, Args... args) {Cout(a, c);Cout(args...);}

typedef pair<int, int> pii;
const int N = int(1e5) + 1;
const int logN = 60;

int n, m, fr[N], res;
struct TIrene{int s, v;} a[N];

void Enter()
{
     cin >> n >> m;
     for(int i = 0; i < n; ++i) cin >> a[i].s >> a[i].v;
     for(int i = 0; i < m; ++i) cin >> fr[i];
     sort(fr, fr + m, greater<int>());
     sort(a, a + n, [](const TIrene& a, const TIrene& b) {
             return a.v > b.v || (a.v == b.v && a.s > b.s);
          });
}

void Solve()
{
     int j = 0;
     for(int i = 0; i < m; ++i) {
        while(a[j].s > fr[i] && j < n) ++j;
        if(j < n) ++res, ++j;
     }
     cout << res;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    if(fopen(FileName".inp", "r")) {
        freopen(FileName".inp", "r", stdin);
        freopen(FileName".out", "w", stdout);
    }

    /*int nTest; cin >> nTest;
    while(nTest --)*/ Enter(), Solve();

    return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp:13:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("O3")
 
joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:68:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(FileName".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:69:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(FileName".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50