제출 #783556

#제출 시각아이디문제언어결과실행 시간메모리
783556mindiyak슈퍼트리 잇기 (IOI20_supertrees)C++14
컴파일 에러
0 ms0 KiB
#include <vector> #include <cassert> #include <cstdio> #include <cstdlib> #include <string> static int n; static std::vector<std::vector<int>> p; static std::vector<std::vector<int>> b; static bool called = false; int construct(std::vector<std::vector<int>> p); void build(std::vector<std::vector<int>> b); static void check(bool cond, std::string message) { if (!cond) { printf("%s\n", message.c_str()); fclose(stdout); exit(0); } } 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; } 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); } #include "supertrees.h" #include <vector> #include <iostream> #define pb push_back using namespace std; int find_head(vector<int> a,int val){ if(a[val] == val) return val; return find_head(a,a[val]); } int find_leaf(vector<int> a,int val){ if(a[val] == val) return val; return find_leaf(a,a[val]); } int construct(vector<vector<int>> p) { // cout << "started" << endl; int n = p.size(); vector<vector<int>> ans; vector<int> temp(n,0); vector<int> head; vector<int> leaf; for (int i = 0; i < n; i++) { ans.pb(temp); head.pb(i); leaf.pb(i); } for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ if(p[i][j] == 1){ int c = min(i,j),d = max(i,j); int h_c = find_head(head,c); int h_d = find_head(head,d); if(h_c != h_d){ ans[h_c][h_d] = 1; ans[h_d][h_c] = 1; } head[h_d] = h_c; leaf[h_c] = find_leaf(leaf,d); } } } build(ans); // cout << "finish" << endl; return 1; }

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cc5v3nNu.o: in function `build(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)':
grader.cpp:(.text+0x320): multiple definition of `build(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'; /tmp/ccadmHjv.o:supertrees.cpp:(.text+0x370): first defined here
/usr/bin/ld: /tmp/cc5v3nNu.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccadmHjv.o:supertrees.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status