제출 #95455

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
95455		mzhao	Praktični (COCI18_prakticni)	C++11	26 / 130	147 ms	14836 KiB

parkticni

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

#ifdef DEBUG
#define D(x...) printf(x)
#else
#define D(x...)
#endif

#define x first
#define y second
#define MN 100100

int N, M;

struct End {
	int n, w, i;
};

vector<End> adj[MN];

int dep[MN];
bool vis[MN];
vector<int> st;

map<int, int> cnt;
vector<pair<int, int>> s;
set<int> t;

void dfs(int n, int d) {
	vis[n] = 1;
	dep[n] = d;
	for (End i : adj[n]) if (!vis[i.n]) {
		st.push_back(st.back() ^ i.w);
		dfs(i.n, d+1);
		st.pop_back();
	} else if (dep[i.n] < d) {
		int val = st.back() ^ st[dep[i.n]] ^ i.w;
		if (val) {
			s.push_back({val, i.i});
			t.insert(val);
			cnt[val]++;
		}
	}
}

int main() {
	scanf("%d%d", &N, &M);
	for (int i = 1, A, B, C; i <= M; i++) {
		scanf("%d%d%d", &A, &B, &C);
		adj[A].push_back({B, C, i});
		adj[B].push_back({A, C, i});
	}
	st.push_back(0);
	dfs(1, 0);
	sort(s.begin(), s.end());
	for (int i = 0; i < s.size(); i++) D("%d %d\n", s[i].x, s[i].y);
	D("ANS:\n\n");
	printf("%d", t.size());
	for (int i = 0; i < s.size(); i++) {
		if (!i || s[i].x != s[i-1].x) {
			printf("\n%d %d %d", s[i].x, cnt[s[i].x], s[i].y);
		} else {
			printf(" %d", s[i].y);
		}
	}
	printf("\n");
}

컴파일 시 표준 에러 (stderr) 메시지

parkticni.cpp: In function 'int main()':
parkticni.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); i++) D("%d %d\n", s[i].x, s[i].y);
                  ~~^~~~~~~~~~
parkticni.cpp:59:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<int>::size_type {aka long unsigned int}' [-Wformat=]
  printf("%d", t.size());
               ~~~~~~~~^
parkticni.cpp:60:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); i++) {
                  ~~^~~~~~~~~~
parkticni.cpp:48:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &M);
  ~~~~~^~~~~~~~~~~~~~~~
parkticni.cpp:50:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &A, &B, &C);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 13 / 13
• Subtask 3: 0 / 13
• Subtask 4: 0 / 13
• Subtask 5: 0 / 13
• Subtask 6: 0 / 13
• Subtask 7: 0 / 13
• Subtask 8: 0 / 13
• Subtask 9: 0 / 13
• Subtask 10: 0 / 13