제출 #1296802

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1296802		SzymonKrzywda	Svjetlo (COCI20_svjetlo)	C++20	컴파일 에러	0 ms	0 KiB

svjetlo

#include <iostream>
#include <vector>
#include <cmath>

using namespace std;


const int MAXN = 5e5 + 7;
vector<int> graf[MAXN];
int dp[MAXN][2][2]; //zmiana parent, koncze w v
bool color[MAXN];


void dfs(int v, int p) {

    if (v != p && graf[v].size() == 1) {
        if (color[v]) {
            dp[v][0][0] = 0;
            dp[v][0][1] = 0;
            dp[v][1][1] = 0;
            return;
        }

        dp[v][0][0] = 1;
        dp[v][0][1] = 1;
        dp[v][1][1] = 3;
        return;
    }

    int xorr = (graf[v].size()) % 2, optsuma = graf[v].size() + (v == p);
    if (v == p) xorr ^= 1;
    xorr ^= color[v];


    for (int s : graf[v]) {
        if (s != p) {
            dfs(s, v);
            if (dp[s][0][1] > dp[s][1][1]) xorr ^= 1;
            optsuma += min(dp[s][0][1], dp[s][1][1]);
        }
    }
    dp[v][0][0] = 1e9;
    dp[v][0][1] = 1e9;
    dp[v][1][1] = 1e9;

    for (int s : graf[v]) {
        if (s == p) continue;
        int oh = dp[s][0][1] > dp[s][1][1];
        int optsuma2 = optsuma - min(dp[s][0][1], dp[s][1][1]);
        //cout << "O: " << v << ' ' << ' ' <<  min(dp[s][0][1], dp[s][1][1]) <<  ' ' << optsuma << ' ' << optsuma2 << '\n';
        dp[v][0][0] = min(dp[v][0][0], optsuma2 + dp[s][0][0] + (xorr ^ oh) * (int)1e7 - 1);
    }
    if (!xorr) dp[v][1][1] = optsuma + 3;
    else dp[v][0][1] = optsuma;
    dp[v][0][0] = min(dp[v][0][0], dp[v][0][1]);

    //cout << v << ": " << dp[v][0][0] << ' ' << dp[v][0][1] << ' ' << dp[v][1][1] << ' ' << optsuma << ' ' << xorr << '\n';

}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, a, b;
    cin >> n;

    char c;
    for (int i = 1; i <= n; i++) {
        cin >> c;
        color[i] = c - '0';
    }

    for (int i = 0; i < n - 1; i++) {
        cin >> a >> b;
        graf[a].push_back(b);
        graf[b].push_back(a);
    }

    
    int ans = 1e9;
    for (int i = 1; i <= n; i++) {
        dfs(i, i);
       // cout << dp[i][0][0] << ' ' << dp[i][0][1] << ' ' << dp[i][1][1] << '\n';
        ans = min({ans, dp[i][0][0], dp[i][0][1], dp[i][1][1]});
    } 


    cout << ans << '\n';



    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

svjetlo.cpp: In function 'int main()':
svjetlo.cpp:84:18: error: no matching function for call to 'min(<brace-enclosed initializer list>)'
   84 |         ans = min({ans, dp[i][0][0], dp[i][0][1], dp[i][1][1]});
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/string:51,
                 from /usr/include/c++/13/bits/locale_classes.h:40,
                 from /usr/include/c++/13/bits/ios_base.h:41,
                 from /usr/include/c++/13/ios:44,
                 from /usr/include/c++/13/ostream:40,
                 from /usr/include/c++/13/iostream:41,
                 from svjetlo.cpp:1:
/usr/include/c++/13/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/13/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
svjetlo.cpp:84:18: note:   candidate expects 2 arguments, 1 provided
   84 |         ans = min({ans, dp[i][0][0], dp[i][0][1], dp[i][1][1]});
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/13/bits/stl_algobase.h:281:5: note:   template argument deduction/substitution failed:
svjetlo.cpp:84:18: note:   candidate expects 3 arguments, 1 provided
   84 |         ans = min({ans, dp[i][0][0], dp[i][0][1], dp[i][1][1]});
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~