Submission #1195005

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))
#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))
#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))
static const int INF = 0x3f3f3f3f; static const long long INFL = 0x3f3f3f3f3f3f3f3fLL;
typedef vector<int> vi; typedef pair<int, int> pii; typedef vector<pair<int, int> > vpii; typedef long long ll;
template<typename T, typename U> static void amin(T &x, U y) { if (y < x) x = y; }
template<typename T, typename U> static void amax(T &x, U y) { if (x < y) x = y; }

int main() {
	int N; int M;
	while (~scanf("%d%d", &N, &M)) {
		vector<vector<int> > g(N);
		for (int i = 0; i < M; ++ i) {
			int u, v;
			scanf("%d%d", &u, &v), -- u, -- v;
			g[u].push_back(v);
			g[v].push_back(u);
		}
		int Q;
		scanf("%d", &Q);
		const int D = 10;
		vector<vector<pair<int, int>>> paints(D + 1, vector<pii>(N, make_pair(0, 0)));
		rep(i, Q) {
			int u; int d; int c;
			scanf("%d%d%d", &u, &d, &c), -- u;
			amax(paints[d][u], make_pair(i + 1, c));
		}
		for (int d = D; d > 0; -- d) {
			rep(i, N) {
				auto p = paints[d][i];
				if (p.first == 0) continue;
				amax(paints[d - 1][i], p);
				for (int j : g[i])
					amax(paints[d - 1][j], p);
			}
		}
		rep(i, N)
			printf("%d\n", paints[0][i].second);
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%d", &u, &v), -- u, -- v;
                                     ^
./Main.cpp:22:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &Q);
                  ^
./Main.cpp:27:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%d%d", &u, &d, &c), -- u;
                                     ^

Judge Result