Submission #40676689

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
signed main() {
	int n, q;
	scanf("%d%d", &n, &q);
	map<int, multiset<int> > mp1;
	map<int, set<int> > mp2;
	while (q--) {
		int op, x, y;
		scanf("%d%d", &op, &x);
		if (op == 1) {
			scanf("%d", &y);
			mp1[y].insert(x), mp2[x].insert(y);
		}
		else if (op == 2) {
			for (int tmp : mp1[x])
				printf("%d ", tmp);
			puts("");
		}
		else {
			for (int tmp : mp2[x])
				printf("%d ", tmp);
			puts("");
		}
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    5 |  scanf("%d%d", &n, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~
./Main.cpp:10:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   10 |   scanf("%d%d", &op, &x);
      |   ~~~~~^~~~~~~~~~~~~~~~~
./Main.cpp:12:9: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   12 |    scanf("%d", &y);
      |    ~~~~~^~~~~~~~~~

Judge Result