提出 #56538165

---

ソースコード 拡げる

// I AM A MUSLIM

#include "bits/stdc++.h"

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#define fastIO std::ios::sync_with_stdio(0);std::cin.tie(0)
#define ll long long int
#define flush fflush(stdout)
#define bl printf("\n")
#define yn(a, b) printf("%s\n", a >= b ? "Yes":"No")
// #define int ll

using pii = std::pair<int,int>;

const int MOD = 1000000007;
// const int MOD = 998244353;
const int mxN = 100100;

signed main() {
	// fastIO;
	int testCases=1;
	// scanf("%d",&testCases);
	// std::cin >> testCases;
	
	for (int TC = 1; TC <= testCases; TC++) {
		int N;
        scanf("%d",&N);
        std::map<int,int> ans;
        for (int i = 0, ty, x; i < N; i++) {
            scanf("%d",&ty);
            if (ty == 3) {
                printf("%d\n", (int)ans.size());
                continue;
            }
            scanf("%d",&x);
            if (ty == 1) ans[x]++;
            else {
                ans[x]--;
                if (ans[x] == 0) ans.erase(x);
            }
        }
		
	}
	
	return 0;
}

/*

*/

提出情報

コンパイルエラー

./Main.cpp:5:13: warning: unknown pragma ignored [-Wunknown-pragmas]
#pragma GCC optimize("O3,unroll-loops")
            ^
./Main.cpp:6:13: warning: unknown pragma ignored [-Wunknown-pragmas]
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
            ^
./Main.cpp:17:11: warning: unused variable 'MOD' [-Wunused-const-variable]
const int MOD = 1000000007;
          ^
./Main.cpp:19:11: warning: unused variable 'mxN' [-Wunused-const-variable]
const int mxN = 100100;
          ^
4 warnings generated.

ジャッジ結果