Submission #946520

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
946520	2024-03-14T17:55:25 Z	n3rm1n	Boat (APIO16_boat)	C++17	Compilation error	0 ms	0 KB

boat

/// boat
#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const long long MAXN = 505, MAXX = 1e6+10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
long long n, m;
long long a[MAXN], b[MAXN];
map < long long, long long > index;
vector < long long > g, u;
void read_hash()
{
    cin >> n;
    for (long long i = 1; i <= n; ++ i)
    {
        cin >> a[i] >> b[i];
        for (long long j = a[i]; j <= b[i]; ++ j)
            g.push_back(j);
    }
    sort(g.begin(), g.end());
    u.push_back(g[0]);
    for (long long i = 1; i < g.size(); ++ i)
    {
        if(u.back() != g[i])
            u.push_back(g[i]);
    }
    for (long long i = 0; i < u.size(); ++ i)
    {
        index[u[i]] = i+1;
    }
}

long long dp[MAXX];
const long long mod = 1e9 + 7;
long long pref[MAXX];
void solve()
{
    long long ans = 0;
    long long maxx = 1e6;
    for (long long i = 1; i <= n; ++ i)
    {
        for (long long j = 1; j <= 1e6; ++ j)
            pref[j] = (pref[j-1] + dp[j]) % mod;
        for (long long j = b[i]; j >= a[i]; -- j)
        {
            dp[j] += pref[j-1] + 1;
            dp[j] %= mod;
        }

    }
    for (long long j = 1; j <= maxx; ++ j)
            pref[j] = pref[j-1] + dp[j];
    ans += pref[maxx];
    ans %= mod;
    cout << ans << endl;
}
int main()
{
    speed();

    read_hash();
    solve();
    return 0;
}

Compilation message

boat.cpp:14:30: error: 'std::map<long long int, long long int> index' redeclared as different kind of entity
   14 | map < long long, long long > index;
      |                              ^~~~~
In file included from /usr/include/string.h:432,
                 from /usr/include/c++/10/cstring:42,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:48,
                 from boat.cpp:2:
/usr/include/strings.h:61:1: note: previous declaration 'const char* index(const char*, int)'
   61 | index (const char *__s, int __c) __THROW
      | ^~~~~
boat.cpp: In function 'void read_hash()':
boat.cpp:27:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (long long i = 1; i < g.size(); ++ i)
      |                           ~~^~~~~~~~~~
boat.cpp:32:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (long long i = 0; i < u.size(); ++ i)
      |                           ~~^~~~~~~~~~
boat.cpp:34:14: error: invalid types '<unresolved overloaded function type>[__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type {aka long long int}]' for array subscript
   34 |         index[u[i]] = i+1;
      |              ^