Submission #589019

#	Time	Username	Problem	Language	Result	Execution time	Memory
589019		maomao90	Boarding Passes (BOI22_passes)	C++17	Compilation error	0 ms	0 KiB

passes

// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 100005;

int n, g;
string s;

ld calc(ld n) {
    return (ld) (n * (n - 1) / 2) / 2;
}

int main() {
    #ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
    #endif
    cout << setprecision(9);
    cin >> s;
    n = SZ(s);
    REP (i, 0, n) {
        mxto(g, s[i] - 'A' + 1);
    }
    assert(g == 1);
    int ln = n / 2, rn = n - ln;
    ld ans = (ll) ln * (ln - 1) / 2 + (ll) rn * (rn - 1) / 2;
    if (ans % 2 == 0) {
        ans /= 2;
        cout << ans << '\n';
    } else {
        ans /= 2;
        cout << ans << ".5\n";
    }
    return 0;
}

Compilation message (stderr)

passes.cpp: In function 'int main()':
passes.cpp:58:13: error: invalid operands of types 'ld' {aka 'long double'} and 'int' to binary 'operator%'
   58 |     if (ans % 2 == 0) {
      |         ~~~ ^ ~
      |         |     |
      |         |     int
      |         ld {aka long double}