Submission #65871163

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Source Code Expand

#include <iostream>
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <map>
#include <set>
#include <unordered_set>
#include <unordered_map>

using namespace std;

#define pb push_back
#define pii pair<int, int>

const int maxN = 1e6;

int n, m, q, r;
set<int> stx[maxN];
set<int> sty[maxN];

int main()
{

	cin >> n >> m >> r;

	for (int i =1 ; i <= r; i++) {
		int x, y;
		scanf("%d%d", &x, &y);
		stx[x].insert(y);
		sty[y].insert(x);
	}
	
	cin >> q;
	while(q--) {
		int tip, val;

		scanf("%d%d", &tip, &val);
		if (tip == 1) {
			printf("%d\n", (int)stx[val].size());
			
			for (int i: stx[val]) {
				int y = i;
				int x = val;
				sty[i].erase(x);
			}

			stx[val].clear();
			continue;
		}

		printf("%d\n", (int) sty[val].size());

		 for (int i: sty[val]) {
				int x = i;
				int y = val;
				stx[x].erase(y);
			}

		sty[val].clear();
	}


	return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:42:37: warning: unused variable ‘y’ [-Wunused-variable]
   42 |                                 int y = i;
      |                                     ^
Main.cpp:28:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   28 |                 scanf("%d%d", &x, &y);
      |                 ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:37:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   37 |                 scanf("%d%d", &tip, &val);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~

Judge Result