Submission #137103

#	Time	Username	Problem	Language	Result	Execution time	Memory
137103		arnold518	영역 (JOI16_ho_t4)	C++14	38 / 100	1076 ms	17448 KiB

2016_ho_t4

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;

#define x first
#define y second

int N, K;
char S[MAXN+10];
set<pii> ST;
vector<int> V;

ll ans;

int main()
{
    int i, j;

    scanf("%d%d%s", &N, &K, S+1);
    pii now={0, 0}; ST.insert(now);

    V.push_back(0);
    for(j=1; j<=K; j++)
    {
        int a=0;
        for(i=1; i<=N; i++)
        {
            if(S[i]=='N') now.y++;
            else if(S[i]=='S') now.y--;
            else if(S[i]=='W') now.x--;
            else now.x++;
            ST.insert(now);
        }
        for(auto it : ST) a+=(ST.count({it.x, it.y}) && ST.count({it.x+1, it.y}) && ST.count({it.x, it.y+1}) && ST.count({it.x+1, it.y+1}));
        V.push_back(a);
        if(j>50 && V[j]-V[j-1]==V[j-1]-V[j-2])
        {
            printf("%lld", V[j]+(ll)(K-j)*(V[j]-V[j-1]));
            return 0;
        }
    }

    printf("%lld", V[K]);
}

Compilation message (stderr)

2016_ho_t4.cpp: In function 'int main()':
2016_ho_t4.cpp:48:24: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type '__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}' [-Wformat=]
     printf("%lld", V[K]);
                        ^
2016_ho_t4.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%s", &N, &K, S+1);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 23 / 23
• Subtask 4: 0 / 62