제출 #824444

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
824444	2023-08-14 06:24:47	PoonYaPat	Sandcastle 2 (JOI22_ho_t5)	C++14	0 / 100	2 ms	340 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int h,w,c[5000][5000],val[50005];
ll ans,dp1[50005],dp2[50005];
map<int,int> mp;
int cc=0;
void dfs(int x, int y) {
    ++cc;
    if (mp[c[x-1][y]]==cc+1) dfs(x-1,y);
    else if (mp[c[x+1][y]]==cc+1) dfs(x+1,y);
    else if (mp[c[x][y-1]]==cc+1) dfs(x,y-1);
    else if (mp[c[x][y+1]]==cc+1) dfs(x,y+1);
}
int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    freopen("test.txt","r",stdin);
    cin>>h>>w;
    if (h==1) {
        
        for (int i=1; i<=w; ++i) cin>>val[i];
        
        for (int i=1; i<=w; ++i) {
            if (i && val[i]>val[i-1]) dp1[i]=dp1[i-1]+1;
            else dp1[i]=1;
            ans+=dp1[i];
        }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     freopen("test.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:64:28: warning: 'Y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   64 |                         dfs(X,Y);
      |                         ~~~^~~~~
Main.cpp:64:28: warning: 'X' may be used uninitialized in this function [-Wmaybe-uninitialized]

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