提出 #983891

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ソースコード 拡げる

#include <cstdio>
#include <map>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
map<P, int> m;

int main(){
    int N;
    ll H, W, a, b;
    scanf("%lld %lld %d", &H, &W, &N);
    for(int i = 0; i < N; i++){
        scanf("%lld %lld", &a, &b);
        for(int j = -1; j <= 1; j++){
            for(int k = -1; k <= 1; k++){
                ll cen_a = a + j;
                ll cen_b = b + k;
                if(cen_a <= 1 || cen_b <= 1 || cen_a >= H || cen_b >= W) continue;
                map<P, int>::iterator ite;
                ite = m.find(P(cen_a, cen_b));
                if(ite != m.end()) ite->second++;
                else m.insert(make_pair(P(cen_a, cen_b), 1));
            }
        }
    }
    ll res[10] = {0};
    ll sum = 0;
    map<P, int>::iterator ite;
    for(ite = m.begin(); ite != m.end(); ite++){
        res[ite->second]++;
        sum++;
    }
    res[0] = (H - 2) * (W - 2) - sum;
    for(int i = 0; i < 10; i++) printf("%lld\n", res[i]);
    return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld %d", &H, &W, &N);
                                      ^
./Main.cpp:13:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &a, &b);
                                   ^

ジャッジ結果