0_0_33637535_5319.cpp: In function 'int dinic()': 0_0_33637535_5319.cpp:51:14: error: 's' was not declared in this scope mflow+=dfs(s,INF); ^ 0_0_33637535_5319.cpp:51:16: error: 'INF' was not declared in this scope mflow+=dfs(s,INF); ^