Submission #1238911

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238911		Joshua_Andersson	Connecting Supertrees (IOI20_supertrees)	C++20	Compilation error	0 ms	0 KiB

supertrees

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
//#define int ll

const int inf = 1e18;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> p2;

#define rep(i, high) for (int i = 0; i < (high); i++)
#define repp(i, lo, high) for (int i = (lo); i < (high); i++)
#define repe(i, container) for (auto& i : container)
#define sz(x) ((int)(x).size())
#define all(x) begin(x), end(x)

#if _LOCAL
static int n;
static std::vector<std::vector<int>> p;
static std::vector<std::vector<int>> b;
static bool called = false;
#endif

#if _LOCAL
static void check(bool cond, std::string message) {
    if (!cond) {
        printf("%s\n", message.c_str());
        fclose(stdout);
        exit(0);
    }
}
#else
static void check(bool cond, std::string message) {
#endif

#if _LOCAL
void build(std::vector<std::vector<int>> _b) {
    check(!called, "build is called more than once");
    called = true;
    check((int)_b.size() == n, "Invalid number of rows in b");
    for (int i = 0; i < n; i++) {
        check((int)_b[i].size() == n, "Invalid number of columns in b");
    }
    b = _b;
}
#else
void build(std::vector<std::vector<int>> _b) {
#endif


int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	std::vector<std::vector<int>> answer;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
        if (i != n - 1) row[i + 1] = 1;
		answer.push_back(row);
	}
	build(answer);
	return 1;
}

#if _LOCAL
int main() {
    assert(scanf("%d", &n) == 1);

    p.resize(n);
    for (int i = 0; i < n; i++) {
        p[i].resize(n);
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            assert(scanf("%d", &p[i][j]) == 1);
        }
    }
    fclose(stdin);

    int possible = construct(p);

    check(possible == 0 || possible == 1, "Invalid return value of construct");
    if (possible == 1) {
        check(called, "construct returned 1 without calling build");
    }
    else {
        check(!called, "construct called build but returned 0");
    }

    printf("%d\n", possible);
    if (possible == 1) {
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                if (j) {
                    printf(" ");
                }
                printf("%d", b[i][j]);
            }
            printf("\n");
        }
    }
    fclose(stdout);
}
#endif

Compilation message (stderr)

supertrees.cpp:7:17: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    7 | const int inf = 1e18;
      |                 ^~~~
supertrees.cpp: In function 'void check(bool, std::string)':
supertrees.cpp:48:46: error: a function-definition is not allowed here before '{' token
   48 | void build(std::vector<std::vector<int>> _b) {
      |                                              ^
supertrees.cpp:63:2: error: expected '}' at end of input
   63 | }
      |  ^
supertrees.cpp:34:51: note: to match this '{'
   34 | static void check(bool cond, std::string message) {
      |                                                   ^