Submission #972571

#	Time	Username	Problem	Language	Result	Execution time	Memory
972571		VMaksimoski008	Sum Zero (RMI20_sumzero)	C++17	Compilation error	0 ms	0 KiB

sumzero

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define int long long

const int LOG = 20;
const int maxn = 2e5 + 5;

int up[maxn][LOG];

int32_t main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    int n;
    cin >> n;

    vector<int> v(n+1), last(n+1, 1e9);
    for(int i=1; i<=n; i++) cin >> v[i];

    map<ll, int> mp; mp[0] = 0;
    ll sum = 0;

    vector<pii> I; I.push_back({ 0, 0 });
    for(int i=1; i<=n; i++) {
        sum += v[i];
        if(mp.count(sum)) last[i] = mp[sum];
        mp[sum] = i;
        if(last[i] != 1e9) I.push_back({ last[i], i });
    }

    vector<int> pref; pref.push_back(0);
    for(int i=1; i<(int)I.size(); i++) {
        if((int)pref.size() == 0) pref.push_back(I[i].first);
        else pref.push_back(max(pref[i-1], I[i].first));
    }

    for(int j=0; j<LOG; j++)
        for(int i=0; i<=n; i++) up[i][j] = -1;

    int p=0;
    for(int i=1; i<=n; i++) {
        while(p+1 < (int)I.size() && I[p+1].second <= i) p++;
        up[i][0] = pref[p];
    }

    for(int j=1; j<LOG; j++)
        for(int i=1; i<=n; i++)
            if(up[i][j-1] != -1) up[i][j] = up[up[i][j-1]][j-1];

    int q;
    cin >> q;

    while(q--) {
        int l, r, ans = 0;
        cin >> l >> r;
        l--;
        for(int j=LOG-1; j>=0; j--) {
            if(up[r][j] >= l && up[r][j] != -1) {
                ans += (1 << j);
                r = up[r][j];
            }
        }
        cout << ans << '\n';
    }

    return 0;
}

Compilation message (stderr)

sumzero.cpp: In function 'int32_t main()':
sumzero.cpp:36:54: error: no matching function for call to 'max(__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type&, int&)'
   36 |         else pref.push_back(max(pref[i-1], I[i].first));
      |                                                      ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sumzero.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
sumzero.cpp:36:54: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   36 |         else pref.push_back(max(pref[i-1], I[i].first));
      |                                                      ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sumzero.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
sumzero.cpp:36:54: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   36 |         else pref.push_back(max(pref[i-1], I[i].first));
      |                                                      ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from sumzero.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
sumzero.cpp:36:54: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   36 |         else pref.push_back(max(pref[i-1], I[i].first));
      |                                                      ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from sumzero.cpp:1:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
sumzero.cpp:36:54: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   36 |         else pref.push_back(max(pref[i-1], I[i].first));
      |                                                      ^